diff --git a/telephony/java/android/telephony/ims/Rcs1To1Thread.java b/telephony/java/android/telephony/ims/Rcs1To1Thread.java
index cc28ee0..3255f8d 100644
--- a/telephony/java/android/telephony/ims/Rcs1To1Thread.java
+++ b/telephony/java/android/telephony/ims/Rcs1To1Thread.java
@@ -23,7 +23,7 @@
  * {@link RcsParticipant}s. Please see Section 5 (1-to-1 Messaging) - GSMA RCC.71 (RCS Universal
  * Profile Service Definition Document)
  *
- * @hide - TODO(109759350) make this public
+ * @hide - TODO: make public
  */
 public class Rcs1To1Thread extends RcsThread {
     private int mThreadId;
diff --git a/telephony/java/android/telephony/ims/RcsEvent.java b/telephony/java/android/telephony/ims/RcsEvent.java
index 744ac76..ef359a1 100644
--- a/telephony/java/android/telephony/ims/RcsEvent.java
+++ b/telephony/java/android/telephony/ims/RcsEvent.java
@@ -16,14 +16,17 @@
 package android.telephony.ims;
 
 import android.os.Parcel;
-import android.os.Parcelable;
 
 /**
  * The base class for events that can happen on {@link RcsParticipant}s and {@link RcsThread}s.
- * @hide - TODO(109759350) make this public
+ *
+ * @hide - TODO: make public
  */
-public abstract class RcsEvent implements Parcelable {
-    protected long mTimestamp;
+public abstract class RcsEvent {
+    /**
+     * @hide
+     */
+    protected final long mTimestamp;
 
     protected RcsEvent(long timestamp) {
         mTimestamp = timestamp;
@@ -44,17 +47,17 @@
      */
     abstract void persist() throws RcsMessageStoreException;
 
+    /**
+     * @hide
+     */
     RcsEvent(Parcel in) {
         mTimestamp = in.readLong();
     }
 
-    @Override
+    /**
+     * @hide
+     */
     public void writeToParcel(Parcel dest, int flags) {
         dest.writeLong(mTimestamp);
     }
-
-    @Override
-    public int describeContents() {
-        return 0;
-    }
 }
diff --git a/telephony/java/android/telephony/ims/RcsEventQueryParameters.aidl b/telephony/java/android/telephony/ims/RcsEventQueryParameters.aidl
deleted file mode 100644
index 9a3600b..0000000
--- a/telephony/java/android/telephony/ims/RcsEventQueryParameters.aidl
+++ /dev/null
@@ -1,20 +0,0 @@
-/*
- *
- * Copyright 2019, The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.telephony.ims;
-
-parcelable RcsEventQueryParameters;
diff --git a/telephony/java/android/telephony/ims/RcsThreadQueryParameters.aidl b/telephony/java/android/telephony/ims/RcsEventQueryParams.aidl
similarity index 94%
copy from telephony/java/android/telephony/ims/RcsThreadQueryParameters.aidl
copy to telephony/java/android/telephony/ims/RcsEventQueryParams.aidl
index 52e73ce..f18c4df 100644
--- a/telephony/java/android/telephony/ims/RcsThreadQueryParameters.aidl
+++ b/telephony/java/android/telephony/ims/RcsEventQueryParams.aidl
@@ -17,4 +17,4 @@
 
 package android.telephony.ims;
 
-parcelable RcsThreadQueryParameters;
+parcelable RcsEventQueryParams;
diff --git a/telephony/java/android/telephony/ims/RcsEventQueryParameters.java b/telephony/java/android/telephony/ims/RcsEventQueryParams.java
similarity index 83%
rename from telephony/java/android/telephony/ims/RcsEventQueryParameters.java
rename to telephony/java/android/telephony/ims/RcsEventQueryParams.java
index 6aee56f..5249bec 100644
--- a/telephony/java/android/telephony/ims/RcsEventQueryParameters.java
+++ b/telephony/java/android/telephony/ims/RcsEventQueryParams.java
@@ -35,29 +35,29 @@
 
 /**
  * The parameters to pass into
- * {@link RcsMessageStore#getRcsEvents(RcsEventQueryParameters)} in order to select a
+ * {@link RcsMessageStore#getRcsEvents(RcsEventQueryParams)} in order to select a
  * subset of {@link RcsEvent}s present in the message store.
  *
- * @hide TODO - make the Builder and builder() public. The rest should stay internal only.
+ * @hide - TODO: make public
  */
-public class RcsEventQueryParameters implements Parcelable {
+public final class RcsEventQueryParams implements Parcelable {
     /**
      * Flag to be used with {@link Builder#setEventType(int)} to make
-     * {@link RcsMessageStore#getRcsEvents(RcsEventQueryParameters)} return all types of
+     * {@link RcsMessageStore#getRcsEvents(RcsEventQueryParams)} return all types of
      * {@link RcsEvent}s
      */
     public static final int ALL_EVENTS = -1;
 
     /**
      * Flag to be used with {@link Builder#setEventType(int)} to make
-     * {@link RcsMessageStore#getRcsEvents(RcsEventQueryParameters)} return sub-types of
+     * {@link RcsMessageStore#getRcsEvents(RcsEventQueryParams)} return sub-types of
      * {@link RcsGroupThreadEvent}s
      */
     public static final int ALL_GROUP_THREAD_EVENTS = 0;
 
     /**
      * Flag to be used with {@link Builder#setEventType(int)} to make
-     * {@link RcsMessageStore#getRcsEvents(RcsEventQueryParameters)} return only
+     * {@link RcsMessageStore#getRcsEvents(RcsEventQueryParams)} return only
      * {@link RcsParticipantAliasChangedEvent}s
      */
     public static final int PARTICIPANT_ALIAS_CHANGED_EVENT =
@@ -65,7 +65,7 @@
 
     /**
      * Flag to be used with {@link Builder#setEventType(int)} to make
-     * {@link RcsMessageStore#getRcsEvents(RcsEventQueryParameters)} return only
+     * {@link RcsMessageStore#getRcsEvents(RcsEventQueryParams)} return only
      * {@link RcsGroupThreadParticipantJoinedEvent}s
      */
     public static final int GROUP_THREAD_PARTICIPANT_JOINED_EVENT =
@@ -73,7 +73,7 @@
 
     /**
      * Flag to be used with {@link Builder#setEventType(int)} to make
-     * {@link RcsMessageStore#getRcsEvents(RcsEventQueryParameters)} return only
+     * {@link RcsMessageStore#getRcsEvents(RcsEventQueryParams)} return only
      * {@link RcsGroupThreadParticipantLeftEvent}s
      */
     public static final int GROUP_THREAD_PARTICIPANT_LEFT_EVENT =
@@ -81,14 +81,14 @@
 
     /**
      * Flag to be used with {@link Builder#setEventType(int)} to make
-     * {@link RcsMessageStore#getRcsEvents(RcsEventQueryParameters)} return only
+     * {@link RcsMessageStore#getRcsEvents(RcsEventQueryParams)} return only
      * {@link RcsGroupThreadNameChangedEvent}s
      */
     public static final int GROUP_THREAD_NAME_CHANGED_EVENT = NAME_CHANGED_EVENT_TYPE;
 
     /**
      * Flag to be used with {@link Builder#setEventType(int)} to make
-     * {@link RcsMessageStore#getRcsEvents(RcsEventQueryParameters)} return only
+     * {@link RcsMessageStore#getRcsEvents(RcsEventQueryParams)} return only
      * {@link RcsGroupThreadIconChangedEvent}s
      */
     public static final int GROUP_THREAD_ICON_CHANGED_EVENT = ICON_CHANGED_EVENT_TYPE;
@@ -134,7 +134,7 @@
     // The thread that the results are limited to
     private int mThreadId;
 
-    RcsEventQueryParameters(@EventType int eventType, int threadId,
+    RcsEventQueryParams(@EventType int eventType, int threadId,
             @SortingProperty int sortingProperty, boolean isAscending, int limit) {
         mEventType = eventType;
         mSortingProperty = sortingProperty;
@@ -144,7 +144,7 @@
     }
 
     /**
-     * @return Returns the type of {@link RcsEvent}s that this {@link RcsEventQueryParameters} is
+     * @return Returns the type of {@link RcsEvent}s that this {@link RcsEventQueryParams} is
      * set to query for.
      */
     public @EventType int getEventType() {
@@ -152,7 +152,7 @@
     }
 
     /**
-     * @return Returns the type of {@link RcsEvent}s that this {@link RcsEventQueryParameters} is
+     * @return Returns the type of {@link RcsEvent}s that this {@link RcsEventQueryParams} is
      * set to query for.
      */
     public int getLimit() {
@@ -186,7 +186,7 @@
     }
 
     /**
-     * A helper class to build the {@link RcsEventQueryParameters}.
+     * A helper class to build the {@link RcsEventQueryParams}.
      */
     public static class Builder {
         private @EventType int mEventType;
@@ -196,8 +196,8 @@
         private int mThreadId;
 
         /**
-         * Creates a new builder for {@link RcsEventQueryParameters} to be used in
-         * {@link RcsMessageStore#getRcsEvents(RcsEventQueryParameters)}
+         * Creates a new builder for {@link RcsEventQueryParams} to be used in
+         * {@link RcsMessageStore#getRcsEvents(RcsEventQueryParams)}
          */
         public Builder() {
             // empty implementation
@@ -236,7 +236,7 @@
 
         /**
          * Sets the property where the results should be sorted against. Defaults to
-         * {@link RcsEventQueryParameters.SortingProperty#SORT_BY_CREATION_ORDER}
+         * {@link RcsEventQueryParams.SortingProperty#SORT_BY_CREATION_ORDER}
          *
          * @param sortingProperty against which property the results should be sorted
          * @return The same instance of the builder to chain parameters.
@@ -273,18 +273,18 @@
         }
 
         /**
-         * Builds the {@link RcsEventQueryParameters} to use in
-         * {@link RcsMessageStore#getRcsEvents(RcsEventQueryParameters)}
+         * Builds the {@link RcsEventQueryParams} to use in
+         * {@link RcsMessageStore#getRcsEvents(RcsEventQueryParams)}
          *
-         * @return An instance of {@link RcsEventQueryParameters} to use with the event query.
+         * @return An instance of {@link RcsEventQueryParams} to use with the event query.
          */
-        public RcsEventQueryParameters build() {
-            return new RcsEventQueryParameters(mEventType, mThreadId, mSortingProperty,
+        public RcsEventQueryParams build() {
+            return new RcsEventQueryParams(mEventType, mThreadId, mSortingProperty,
                     mIsAscending, mLimit);
         }
     }
 
-    protected RcsEventQueryParameters(Parcel in) {
+    private RcsEventQueryParams(Parcel in) {
         mEventType = in.readInt();
         mThreadId = in.readInt();
         mSortingProperty = in.readInt();
@@ -292,20 +292,19 @@
         mLimit = in.readInt();
     }
 
-    public static final Creator<RcsEventQueryParameters> CREATOR =
-            new Creator<RcsEventQueryParameters>() {
+    public static final Creator<RcsEventQueryParams> CREATOR =
+            new Creator<RcsEventQueryParams>() {
                 @Override
-                public RcsEventQueryParameters createFromParcel(Parcel in) {
-                    return new RcsEventQueryParameters(in);
+                public RcsEventQueryParams createFromParcel(Parcel in) {
+                    return new RcsEventQueryParams(in);
                 }
 
                 @Override
-                public RcsEventQueryParameters[] newArray(int size) {
-                    return new RcsEventQueryParameters[size];
+                public RcsEventQueryParams[] newArray(int size) {
+                    return new RcsEventQueryParams[size];
                 }
             };
 
-
     @Override
     public int describeContents() {
         return 0;
diff --git a/telephony/java/android/telephony/ims/RcsEventQueryResult.java b/telephony/java/android/telephony/ims/RcsEventQueryResult.java
index 27898ab..f8d57fa 100644
--- a/telephony/java/android/telephony/ims/RcsEventQueryResult.java
+++ b/telephony/java/android/telephony/ims/RcsEventQueryResult.java
@@ -22,13 +22,13 @@
 import java.util.List;
 
 /**
- * The result of a {@link RcsMessageStore#getRcsEvents(RcsEventQueryParameters)}
+ * The result of a {@link RcsMessageStore#getRcsEvents(RcsEventQueryParams)}
  * call. This class allows getting the token for querying the next batch of events in order to
  * prevent handling large amounts of data at once.
  *
- * @hide
+ * @hide - TODO: make public
  */
-public class RcsEventQueryResult implements Parcelable {
+public final class RcsEventQueryResult implements Parcelable {
     private RcsQueryContinuationToken mContinuationToken;
     private List<RcsEvent> mEvents;
 
@@ -63,7 +63,8 @@
         return mEvents;
     }
 
-    protected RcsEventQueryResult(Parcel in) {
+    private RcsEventQueryResult(Parcel in) {
+        mContinuationToken = in.readParcelable(RcsQueryContinuationToken.class.getClassLoader());
     }
 
     public static final Creator<RcsEventQueryResult> CREATOR = new Creator<RcsEventQueryResult>() {
diff --git a/telephony/java/android/telephony/ims/RcsFileTransferCreationParameters.aidl b/telephony/java/android/telephony/ims/RcsFileTransferCreationParameters.aidl
deleted file mode 100644
index 5fec021..0000000
--- a/telephony/java/android/telephony/ims/RcsFileTransferCreationParameters.aidl
+++ /dev/null
@@ -1,20 +0,0 @@
-/*
- *
- * Copyright 2019, The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.telephony.ims;
-
-parcelable RcsFileTransferCreationParameters;
diff --git a/telephony/java/android/telephony/ims/RcsThreadQueryParameters.aidl b/telephony/java/android/telephony/ims/RcsFileTransferCreationParams.aidl
similarity index 93%
copy from telephony/java/android/telephony/ims/RcsThreadQueryParameters.aidl
copy to telephony/java/android/telephony/ims/RcsFileTransferCreationParams.aidl
index 52e73ce..1552190 100644
--- a/telephony/java/android/telephony/ims/RcsThreadQueryParameters.aidl
+++ b/telephony/java/android/telephony/ims/RcsFileTransferCreationParams.aidl
@@ -17,4 +17,4 @@
 
 package android.telephony.ims;
 
-parcelable RcsThreadQueryParameters;
+parcelable RcsFileTransferCreationParams;
diff --git a/telephony/java/android/telephony/ims/RcsFileTransferCreationParameters.java b/telephony/java/android/telephony/ims/RcsFileTransferCreationParams.java
similarity index 92%
rename from telephony/java/android/telephony/ims/RcsFileTransferCreationParameters.java
rename to telephony/java/android/telephony/ims/RcsFileTransferCreationParams.java
index bd7cb4b..663def5 100644
--- a/telephony/java/android/telephony/ims/RcsFileTransferCreationParameters.java
+++ b/telephony/java/android/telephony/ims/RcsFileTransferCreationParams.java
@@ -22,12 +22,12 @@
 
 /**
  * Pass an instance of this class to
- * {@link RcsMessage#insertFileTransfer(RcsFileTransferCreationParameters)} create an
+ * {@link RcsMessage#insertFileTransfer(RcsFileTransferCreationParams)} create an
  * {@link RcsFileTransferPart} and save it into storage.
  *
- * @hide - TODO(109759350) make this public
+ * @hide - TODO: make public
  */
-public class RcsFileTransferCreationParameters implements Parcelable {
+public final class RcsFileTransferCreationParams implements Parcelable {
     private String mRcsFileTransferSessionId;
     private Uri mContentUri;
     private String mContentMimeType;
@@ -128,7 +128,7 @@
     /**
      * @hide
      */
-    RcsFileTransferCreationParameters(Builder builder) {
+    RcsFileTransferCreationParams(Builder builder) {
         mRcsFileTransferSessionId = builder.mRcsFileTransferSessionId;
         mContentUri = builder.mContentUri;
         mContentMimeType = builder.mContentMimeType;
@@ -143,7 +143,7 @@
     }
 
     /**
-     * A builder to create instances of {@link RcsFileTransferCreationParameters}
+     * A builder to create instances of {@link RcsFileTransferCreationParams}
      */
     public class Builder {
         private String mRcsFileTransferSessionId;
@@ -300,18 +300,18 @@
         }
 
         /**
-         * Creates an instance of {@link RcsFileTransferCreationParameters} with the given
+         * Creates an instance of {@link RcsFileTransferCreationParams} with the given
          * parameters.
          *
          * @return The same instance of {@link Builder} to chain methods
-         * @see RcsMessage#insertFileTransfer(RcsFileTransferCreationParameters)
+         * @see RcsMessage#insertFileTransfer(RcsFileTransferCreationParams)
          */
-        public RcsFileTransferCreationParameters build() {
-            return new RcsFileTransferCreationParameters(this);
+        public RcsFileTransferCreationParams build() {
+            return new RcsFileTransferCreationParams(this);
         }
     }
 
-    protected RcsFileTransferCreationParameters(Parcel in) {
+    private RcsFileTransferCreationParams(Parcel in) {
         mRcsFileTransferSessionId = in.readString();
         mContentUri = in.readParcelable(Uri.class.getClassLoader());
         mContentMimeType = in.readString();
@@ -325,16 +325,16 @@
         mFileTransferStatus = in.readInt();
     }
 
-    public static final Creator<RcsFileTransferCreationParameters> CREATOR =
-            new Creator<RcsFileTransferCreationParameters>() {
+    public static final Creator<RcsFileTransferCreationParams> CREATOR =
+            new Creator<RcsFileTransferCreationParams>() {
                 @Override
-                public RcsFileTransferCreationParameters createFromParcel(Parcel in) {
-                    return new RcsFileTransferCreationParameters(in);
+                public RcsFileTransferCreationParams createFromParcel(Parcel in) {
+                    return new RcsFileTransferCreationParams(in);
                 }
 
                 @Override
-                public RcsFileTransferCreationParameters[] newArray(int size) {
-                    return new RcsFileTransferCreationParameters[size];
+                public RcsFileTransferCreationParams[] newArray(int size) {
+                    return new RcsFileTransferCreationParams[size];
                 }
             };
 
diff --git a/telephony/java/android/telephony/ims/RcsFileTransferPart.java b/telephony/java/android/telephony/ims/RcsFileTransferPart.java
index 2eadc4a..1ce7999 100644
--- a/telephony/java/android/telephony/ims/RcsFileTransferPart.java
+++ b/telephony/java/android/telephony/ims/RcsFileTransferPart.java
@@ -27,7 +27,7 @@
  * A part of a composite {@link RcsMessage} that holds a file transfer. Please see Section 7
  * (File Transfer) - GSMA RCC.71 (RCS Universal Profile Service Definition Document)
  *
- * @hide - TODO(109759350) make this public
+ * @hide - TODO: make public
  */
 public class RcsFileTransferPart {
     /**
diff --git a/telephony/java/android/telephony/ims/RcsGroupThread.java b/telephony/java/android/telephony/ims/RcsGroupThread.java
index 6f6258e..2c42494 100644
--- a/telephony/java/android/telephony/ims/RcsGroupThread.java
+++ b/telephony/java/android/telephony/ims/RcsGroupThread.java
@@ -30,7 +30,7 @@
  * or leave. Please see Section 6 (Group Chat) - GSMA RCC.71 (RCS Universal Profile Service
  * Definition Document)
  *
- * @hide - TODO(sahinc) make this public
+ * @hide - TODO: make public
  */
 public class RcsGroupThread extends RcsThread {
     /**
@@ -166,8 +166,8 @@
     @WorkerThread
     @NonNull
     public Set<RcsParticipant> getParticipants() throws RcsMessageStoreException {
-        RcsParticipantQueryParameters queryParameters =
-                new RcsParticipantQueryParameters.Builder().setThread(this).build();
+        RcsParticipantQueryParams queryParameters =
+                new RcsParticipantQueryParams.Builder().setThread(this).build();
 
         RcsParticipantQueryResult queryResult = RcsControllerCall.call(
                 iRcs -> iRcs.getParticipants(queryParameters));
diff --git a/telephony/java/android/telephony/ims/RcsGroupThreadEvent.java b/telephony/java/android/telephony/ims/RcsGroupThreadEvent.java
index a18437b..bc61877 100644
--- a/telephony/java/android/telephony/ims/RcsGroupThreadEvent.java
+++ b/telephony/java/android/telephony/ims/RcsGroupThreadEvent.java
@@ -21,7 +21,7 @@
 /**
  * An event that happened on an {@link RcsGroupThread}.
  *
- * @hide - TODO(109759350) make this public
+ * @hide - TODO: make public
  */
 public abstract class RcsGroupThreadEvent extends RcsEvent {
     private final int mRcsGroupThreadId;
@@ -50,13 +50,18 @@
         return new RcsParticipant(mOriginatingParticipantId);
     }
 
+    /**
+     * @hide
+     */
     RcsGroupThreadEvent(Parcel in) {
         super(in);
         mRcsGroupThreadId = in.readInt();
         mOriginatingParticipantId = in.readInt();
     }
 
-    @Override
+    /**
+     * @hide
+     */
     public void writeToParcel(Parcel dest, int flags) {
         super.writeToParcel(dest, flags);
         dest.writeInt(mRcsGroupThreadId);
diff --git a/telephony/java/android/telephony/ims/RcsGroupThreadIconChangedEvent.java b/telephony/java/android/telephony/ims/RcsGroupThreadIconChangedEvent.java
index 7beed3b..74af973 100644
--- a/telephony/java/android/telephony/ims/RcsGroupThreadIconChangedEvent.java
+++ b/telephony/java/android/telephony/ims/RcsGroupThreadIconChangedEvent.java
@@ -19,14 +19,16 @@
 import android.annotation.Nullable;
 import android.net.Uri;
 import android.os.Parcel;
+import android.os.Parcelable;
 
 /**
  * An event that indicates an {@link RcsGroupThread}'s icon was changed. Please see R6-2-5 - GSMA
  * RCC.71 (RCS Universal Profile Service Definition Document)
  *
- * @hide - TODO(109759350) make this public
+ * @hide - TODO: make public
  */
-public class RcsGroupThreadIconChangedEvent extends RcsGroupThreadEvent {
+public final class RcsGroupThreadIconChangedEvent extends RcsGroupThreadEvent implements
+        Parcelable {
     private final Uri mNewIcon;
 
     /**
@@ -91,7 +93,7 @@
                 }
             };
 
-    protected RcsGroupThreadIconChangedEvent(Parcel in) {
+    private RcsGroupThreadIconChangedEvent(Parcel in) {
         super(in);
         mNewIcon = in.readParcelable(Uri.class.getClassLoader());
     }
diff --git a/telephony/java/android/telephony/ims/RcsGroupThreadNameChangedEvent.java b/telephony/java/android/telephony/ims/RcsGroupThreadNameChangedEvent.java
index 0d2ea4f..06f4d5b 100644
--- a/telephony/java/android/telephony/ims/RcsGroupThreadNameChangedEvent.java
+++ b/telephony/java/android/telephony/ims/RcsGroupThreadNameChangedEvent.java
@@ -18,15 +18,17 @@
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.os.Parcel;
+import android.os.Parcelable;
 
 /**
  * An event that indicates an {@link RcsGroupThread}'s name was changed. Please see R6-2-5 - GSMA
  * RCC.71 (RCS Universal Profile Service Definition Document)
  *
- * @hide - TODO(109759350) make this public
+ * @hide - TODO: make public
  */
-public class RcsGroupThreadNameChangedEvent extends RcsGroupThreadEvent {
-    private String mNewName;
+public final class RcsGroupThreadNameChangedEvent extends RcsGroupThreadEvent implements
+        Parcelable {
+    private final String mNewName;
 
     /**
      * Creates a new {@link RcsGroupThreadNameChangedEvent}. This event is not persisted into
@@ -89,7 +91,7 @@
                 }
             };
 
-    protected RcsGroupThreadNameChangedEvent(Parcel in) {
+    private RcsGroupThreadNameChangedEvent(Parcel in) {
         super(in);
         mNewName = in.readString();
     }
diff --git a/telephony/java/android/telephony/ims/RcsGroupThreadParticipantJoinedEvent.java b/telephony/java/android/telephony/ims/RcsGroupThreadParticipantJoinedEvent.java
index 2adafc7..4932707 100644
--- a/telephony/java/android/telephony/ims/RcsGroupThreadParticipantJoinedEvent.java
+++ b/telephony/java/android/telephony/ims/RcsGroupThreadParticipantJoinedEvent.java
@@ -17,15 +17,17 @@
 
 import android.annotation.NonNull;
 import android.os.Parcel;
+import android.os.Parcelable;
 
 /**
  * An event that indicates an RCS participant has joined an {@link RcsThread}. Please see US6-3 -
  * GSMA RCC.71 (RCS Universal Profile Service Definition Document)
  *
- * @hide - TODO(109759350) make this public
+ * @hide - TODO: make public
  */
-public class RcsGroupThreadParticipantJoinedEvent extends RcsGroupThreadEvent {
-    private int mJoinedParticipantId;
+public final class RcsGroupThreadParticipantJoinedEvent extends RcsGroupThreadEvent implements
+        Parcelable {
+    private final int mJoinedParticipantId;
 
     /**
      * Creates a new {@link RcsGroupThreadParticipantJoinedEvent}. This event is not persisted into
@@ -89,7 +91,7 @@
                 }
             };
 
-    protected RcsGroupThreadParticipantJoinedEvent(Parcel in) {
+    private RcsGroupThreadParticipantJoinedEvent(Parcel in) {
         super(in);
         mJoinedParticipantId = in.readInt();
     }
diff --git a/telephony/java/android/telephony/ims/RcsGroupThreadParticipantLeftEvent.java b/telephony/java/android/telephony/ims/RcsGroupThreadParticipantLeftEvent.java
index 87c1852..970a046 100644
--- a/telephony/java/android/telephony/ims/RcsGroupThreadParticipantLeftEvent.java
+++ b/telephony/java/android/telephony/ims/RcsGroupThreadParticipantLeftEvent.java
@@ -17,15 +17,17 @@
 
 import android.annotation.NonNull;
 import android.os.Parcel;
+import android.os.Parcelable;
 
 /**
  * An event that indicates an RCS participant has left an {@link RcsThread}. Please see US6-23 -
  * GSMA RCC.71 (RCS Universal Profile Service Definition Document)
  *
- * @hide - TODO(109759350) make this public
+ * @hide - TODO: make public
  */
-public class RcsGroupThreadParticipantLeftEvent extends RcsGroupThreadEvent {
-    private int mLeavingParticipantId;
+public final class RcsGroupThreadParticipantLeftEvent extends RcsGroupThreadEvent implements
+        Parcelable {
+    private final int mLeavingParticipantId;
 
     /**
      * Creates a new {@link RcsGroupThreadParticipantLeftEvent}. his event is not persisted into
@@ -88,7 +90,7 @@
                 }
             };
 
-    protected RcsGroupThreadParticipantLeftEvent(Parcel in) {
+    private RcsGroupThreadParticipantLeftEvent(Parcel in) {
         super(in);
         mLeavingParticipantId = in.readInt();
     }
diff --git a/telephony/java/android/telephony/ims/RcsIncomingMessage.java b/telephony/java/android/telephony/ims/RcsIncomingMessage.java
index 2ea115b..f3b7815 100644
--- a/telephony/java/android/telephony/ims/RcsIncomingMessage.java
+++ b/telephony/java/android/telephony/ims/RcsIncomingMessage.java
@@ -20,7 +20,7 @@
 /**
  * This is a single instance of a message received over RCS.
  *
- * @hide - TODO(109759350) make this public
+ * @hide - TODO: make public
  */
 public class RcsIncomingMessage extends RcsMessage {
     /**
diff --git a/telephony/java/android/telephony/ims/RcsIncomingMessageCreationParameters.aidl b/telephony/java/android/telephony/ims/RcsIncomingMessageCreationParameters.aidl
deleted file mode 100644
index 76073c2..0000000
--- a/telephony/java/android/telephony/ims/RcsIncomingMessageCreationParameters.aidl
+++ /dev/null
@@ -1,20 +0,0 @@
-/*
- *
- * Copyright 2019, The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.telephony.ims;
-
-parcelable RcsIncomingMessageCreationParameters;
diff --git a/telephony/java/android/telephony/ims/RcsThreadQueryParameters.aidl b/telephony/java/android/telephony/ims/RcsIncomingMessageCreationParams.aidl
similarity index 93%
copy from telephony/java/android/telephony/ims/RcsThreadQueryParameters.aidl
copy to telephony/java/android/telephony/ims/RcsIncomingMessageCreationParams.aidl
index 52e73ce..1f1d4f6 100644
--- a/telephony/java/android/telephony/ims/RcsThreadQueryParameters.aidl
+++ b/telephony/java/android/telephony/ims/RcsIncomingMessageCreationParams.aidl
@@ -17,4 +17,4 @@
 
 package android.telephony.ims;
 
-parcelable RcsThreadQueryParameters;
+parcelable RcsIncomingMessageCreationParams;
diff --git a/telephony/java/android/telephony/ims/RcsIncomingMessageCreationParameters.java b/telephony/java/android/telephony/ims/RcsIncomingMessageCreationParams.java
similarity index 81%
rename from telephony/java/android/telephony/ims/RcsIncomingMessageCreationParameters.java
rename to telephony/java/android/telephony/ims/RcsIncomingMessageCreationParams.java
index acde8af..64b2339 100644
--- a/telephony/java/android/telephony/ims/RcsIncomingMessageCreationParameters.java
+++ b/telephony/java/android/telephony/ims/RcsIncomingMessageCreationParams.java
@@ -21,13 +21,13 @@
 import android.os.Parcelable;
 
 /**
- * {@link RcsIncomingMessageCreationParameters} is a collection of parameters that should be passed
- * into {@link RcsThread#addIncomingMessage(RcsIncomingMessageCreationParameters)} to generate an
+ * {@link RcsIncomingMessageCreationParams} is a collection of parameters that should be passed
+ * into {@link RcsThread#addIncomingMessage(RcsIncomingMessageCreationParams)} to generate an
  * {@link RcsIncomingMessage} on that {@link RcsThread}
  *
- * @hide TODO:make public
+ * @hide - TODO: make public
  */
-public class RcsIncomingMessageCreationParameters extends RcsMessageCreationParameters implements
+public final class RcsIncomingMessageCreationParams extends RcsMessageCreationParams implements
         Parcelable {
     // The arrival timestamp for the RcsIncomingMessage to be created
     private final long mArrivalTimestamp;
@@ -37,18 +37,18 @@
     private final int mSenderParticipantId;
 
     /**
-     * Builder to help create an {@link RcsIncomingMessageCreationParameters}
+     * Builder to help create an {@link RcsIncomingMessageCreationParams}
      *
-     * @see RcsThread#addIncomingMessage(RcsIncomingMessageCreationParameters)
+     * @see RcsThread#addIncomingMessage(RcsIncomingMessageCreationParams)
      */
-    public static class Builder extends RcsMessageCreationParameters.Builder {
+    public static class Builder extends RcsMessageCreationParams.Builder {
         private RcsParticipant mSenderParticipant;
         private long mArrivalTimestamp;
         private long mSeenTimestamp;
 
         /**
          * Creates a {@link Builder} to create an instance of
-         * {@link RcsIncomingMessageCreationParameters}
+         * {@link RcsIncomingMessageCreationParams}
          *
          * @param originationTimestamp The timestamp of {@link RcsMessage} creation. The origination
          *                             timestamp value in milliseconds passed after midnight,
@@ -103,22 +103,22 @@
 
         /**
          * Creates parameters for creating a new incoming message.
-         * @return A new instance of {@link RcsIncomingMessageCreationParameters} to create a new
+         * @return A new instance of {@link RcsIncomingMessageCreationParams} to create a new
          * {@link RcsIncomingMessage}
          */
-        public RcsIncomingMessageCreationParameters build() {
-            return new RcsIncomingMessageCreationParameters(this);
+        public RcsIncomingMessageCreationParams build() {
+            return new RcsIncomingMessageCreationParams(this);
         }
     }
 
-    private RcsIncomingMessageCreationParameters(Builder builder) {
+    private RcsIncomingMessageCreationParams(Builder builder) {
         super(builder);
         mArrivalTimestamp = builder.mArrivalTimestamp;
         mSeenTimestamp = builder.mSeenTimestamp;
         mSenderParticipantId = builder.mSenderParticipant.getId();
     }
 
-    protected RcsIncomingMessageCreationParameters(Parcel in) {
+    private RcsIncomingMessageCreationParams(Parcel in) {
         super(in);
         mArrivalTimestamp = in.readLong();
         mSeenTimestamp = in.readLong();
@@ -152,16 +152,16 @@
         return mSenderParticipantId;
     }
 
-    public static final Creator<RcsIncomingMessageCreationParameters> CREATOR =
-            new Creator<RcsIncomingMessageCreationParameters>() {
+    public static final Creator<RcsIncomingMessageCreationParams> CREATOR =
+            new Creator<RcsIncomingMessageCreationParams>() {
                 @Override
-                public RcsIncomingMessageCreationParameters createFromParcel(Parcel in) {
-                    return new RcsIncomingMessageCreationParameters(in);
+                public RcsIncomingMessageCreationParams createFromParcel(Parcel in) {
+                    return new RcsIncomingMessageCreationParams(in);
                 }
 
                 @Override
-                public RcsIncomingMessageCreationParameters[] newArray(int size) {
-                    return new RcsIncomingMessageCreationParameters[size];
+                public RcsIncomingMessageCreationParams[] newArray(int size) {
+                    return new RcsIncomingMessageCreationParams[size];
                 }
             };
 
@@ -172,7 +172,7 @@
 
     @Override
     public void writeToParcel(Parcel dest, int flags) {
-        super.writeToParcel(dest, flags);
+        super.writeToParcel(dest);
         dest.writeLong(mArrivalTimestamp);
         dest.writeLong(mSeenTimestamp);
         dest.writeInt(mSenderParticipantId);
diff --git a/telephony/java/android/telephony/ims/RcsManager.java b/telephony/java/android/telephony/ims/RcsManager.java
index e84d4ed..90bd044 100644
--- a/telephony/java/android/telephony/ims/RcsManager.java
+++ b/telephony/java/android/telephony/ims/RcsManager.java
@@ -20,11 +20,19 @@
 
 /**
  * The manager class for RCS related utilities.
- * @hide
+ *
+ * @hide - TODO: make public
  */
 @SystemService(Context.TELEPHONY_RCS_SERVICE)
 public class RcsManager {
 
+    /**
+     * @hide
+     */
+    public RcsManager() {
+        // empty constructor
+    }
+
     private static final RcsMessageStore sRcsMessageStoreInstance = new RcsMessageStore();
 
     /**
diff --git a/telephony/java/android/telephony/ims/RcsMessage.java b/telephony/java/android/telephony/ims/RcsMessage.java
index b70a9a7..1700941 100644
--- a/telephony/java/android/telephony/ims/RcsMessage.java
+++ b/telephony/java/android/telephony/ims/RcsMessage.java
@@ -28,7 +28,7 @@
 /**
  * This is a single instance of a message sent or received over RCS.
  *
- * @hide - TODO(109759350) make this public
+ * @hide - TODO: make public
  */
 public abstract class RcsMessage {
     /**
@@ -83,7 +83,10 @@
      */
     public static final int SEEN = 9;
 
-    protected int mId;
+    /**
+     * @hide
+     */
+    protected final int mId;
 
     @IntDef({
             DRAFT, QUEUED, SENDING, SENT, RETRYING, FAILED, RECEIVED, SEEN
@@ -277,7 +280,7 @@
     @NonNull
     @WorkerThread
     public RcsFileTransferPart insertFileTransfer(
-            RcsFileTransferCreationParameters fileTransferCreationParameters)
+            RcsFileTransferCreationParams fileTransferCreationParameters)
             throws RcsMessageStoreException {
         return new RcsFileTransferPart(RcsControllerCall.call(
                 iRcs -> iRcs.storeFileTransfer(mId, isIncoming(), fileTransferCreationParameters)));
diff --git a/telephony/java/android/telephony/ims/RcsMessageCreationParameters.aidl b/telephony/java/android/telephony/ims/RcsMessageCreationParameters.aidl
deleted file mode 100644
index 5774d00..0000000
--- a/telephony/java/android/telephony/ims/RcsMessageCreationParameters.aidl
+++ /dev/null
@@ -1,20 +0,0 @@
-/*
- *
- * Copyright 2019, The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.telephony.ims;
-
-parcelable RcsMessageCreationParameters;
diff --git a/telephony/java/android/telephony/ims/RcsMessageCreationParameters.java b/telephony/java/android/telephony/ims/RcsMessageCreationParams.java
similarity index 80%
rename from telephony/java/android/telephony/ims/RcsMessageCreationParameters.java
rename to telephony/java/android/telephony/ims/RcsMessageCreationParams.java
index ff3f33e..9ac4dcd 100644
--- a/telephony/java/android/telephony/ims/RcsMessageCreationParameters.java
+++ b/telephony/java/android/telephony/ims/RcsMessageCreationParams.java
@@ -21,18 +21,16 @@
 import android.annotation.CheckResult;
 import android.annotation.Nullable;
 import android.os.Parcel;
-import android.os.Parcelable;
-import android.telephony.SubscriptionInfo;
 
 /**
  * The collection of parameters to be passed into
- * {@link RcsThread#addIncomingMessage(RcsIncomingMessageCreationParameters)} and
- * {@link RcsThread#addOutgoingMessage(RcsMessageCreationParameters)} to create and persist
+ * {@link RcsThread#addIncomingMessage(RcsIncomingMessageCreationParams)} and
+ * {@link RcsThread#addOutgoingMessage(RcsOutgoingMessageCreationParams)} to create and persist
  * {@link RcsMessage}s on an {@link RcsThread}
  *
- * @hide TODO - make public
+ * @hide - TODO: make public
  */
-public class RcsMessageCreationParameters implements Parcelable {
+public class RcsMessageCreationParams {
     // The globally unique id of the RcsMessage to be created.
     private final String mRcsMessageGlobalId;
 
@@ -110,7 +108,7 @@
     /**
      * The base builder for creating {@link RcsMessage}s on {@link RcsThread}s.
      *
-     * @see RcsIncomingMessageCreationParameters
+     * @see RcsIncomingMessageCreationParams
      */
     public static class Builder {
         private String mRcsMessageGlobalId;
@@ -122,15 +120,7 @@
         private double mLongitude = LOCATION_NOT_SET;
 
         /**
-         * Creates a new {@link Builder} to create an instance of
-         * {@link RcsMessageCreationParameters}.
-         *
-         * @param originationTimestamp The timestamp of {@link RcsMessage} creation. The origination
-         *                             timestamp value in milliseconds passed after midnight,
-         *                             January 1, 1970 UTC
-         * @param subscriptionId The subscription ID that was used to send or receive this
-         *                       {@link RcsMessage}
-         * @see SubscriptionInfo#getSubscriptionId()
+         * @hide
          */
         public Builder(long originationTimestamp, int subscriptionId) {
             mOriginationTimestamp = originationTimestamp;
@@ -207,14 +197,14 @@
         }
 
         /**
-         * @hide
+         * @return Builds and returns a newly created {@link RcsMessageCreationParams}
          */
-        public RcsMessageCreationParameters build() {
-            return new RcsMessageCreationParameters(this);
+        public RcsMessageCreationParams build() {
+            return new RcsMessageCreationParams(this);
         }
     }
 
-    protected RcsMessageCreationParameters(Builder builder) {
+    protected RcsMessageCreationParams(Builder builder) {
         mRcsMessageGlobalId = builder.mRcsMessageGlobalId;
         mSubId = builder.mSubId;
         mMessageStatus = builder.mMessageStatus;
@@ -224,7 +214,10 @@
         mLongitude = builder.mLongitude;
     }
 
-    protected RcsMessageCreationParameters(Parcel in) {
+    /**
+     * @hide
+     */
+    RcsMessageCreationParams(Parcel in) {
         mRcsMessageGlobalId = in.readString();
         mSubId = in.readInt();
         mMessageStatus = in.readInt();
@@ -234,26 +227,10 @@
         mLongitude = in.readDouble();
     }
 
-    public static final Creator<RcsMessageCreationParameters> CREATOR =
-            new Creator<RcsMessageCreationParameters>() {
-                @Override
-                public RcsMessageCreationParameters createFromParcel(Parcel in) {
-                    return new RcsMessageCreationParameters(in);
-                }
-
-                @Override
-                public RcsMessageCreationParameters[] newArray(int size) {
-                    return new RcsMessageCreationParameters[size];
-                }
-            };
-
-    @Override
-    public int describeContents() {
-        return 0;
-    }
-
-    @Override
-    public void writeToParcel(Parcel dest, int flags) {
+    /**
+     * @hide
+     */
+    public void writeToParcel(Parcel dest) {
         dest.writeString(mRcsMessageGlobalId);
         dest.writeInt(mSubId);
         dest.writeInt(mMessageStatus);
diff --git a/telephony/java/android/telephony/ims/RcsMessageQueryParameters.aidl b/telephony/java/android/telephony/ims/RcsMessageQueryParameters.aidl
deleted file mode 100644
index c325c23..0000000
--- a/telephony/java/android/telephony/ims/RcsMessageQueryParameters.aidl
+++ /dev/null
@@ -1,20 +0,0 @@
-/*
- *
- * Copyright 2019, The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.telephony.ims;
-
-parcelable RcsMessageQueryParameters;
diff --git a/telephony/java/android/telephony/ims/RcsThreadQueryParameters.aidl b/telephony/java/android/telephony/ims/RcsMessageQueryParams.aidl
similarity index 94%
rename from telephony/java/android/telephony/ims/RcsThreadQueryParameters.aidl
rename to telephony/java/android/telephony/ims/RcsMessageQueryParams.aidl
index 52e73ce..e9cbd9c 100644
--- a/telephony/java/android/telephony/ims/RcsThreadQueryParameters.aidl
+++ b/telephony/java/android/telephony/ims/RcsMessageQueryParams.aidl
@@ -17,4 +17,4 @@
 
 package android.telephony.ims;
 
-parcelable RcsThreadQueryParameters;
+parcelable RcsMessageQueryParams;
diff --git a/telephony/java/android/telephony/ims/RcsMessageQueryParameters.java b/telephony/java/android/telephony/ims/RcsMessageQueryParams.java
similarity index 86%
rename from telephony/java/android/telephony/ims/RcsMessageQueryParameters.java
rename to telephony/java/android/telephony/ims/RcsMessageQueryParams.java
index c964cf9..fae0d97 100644
--- a/telephony/java/android/telephony/ims/RcsMessageQueryParameters.java
+++ b/telephony/java/android/telephony/ims/RcsMessageQueryParams.java
@@ -29,12 +29,12 @@
 
 /**
  * The parameters to pass into
- * {@link RcsMessageStore#getRcsMessages(RcsMessageQueryParameters)} in order to select a
+ * {@link RcsMessageStore#getRcsMessages(RcsMessageQueryParams)} in order to select a
  * subset of {@link RcsMessage}s present in the message store.
  *
- * @hide TODO - make the Builder and builder() public. The rest should stay internal only.
+ * @hide - TODO: make public
  */
-public class RcsMessageQueryParameters implements Parcelable {
+public final class RcsMessageQueryParams implements Parcelable {
     /**
      * @hide - not meant for public use
      */
@@ -60,28 +60,28 @@
 
     /**
      * Bitmask flag to be used with {@link Builder#setMessageType(int)} to make
-     * {@link RcsMessageStore#getRcsMessages(RcsMessageQueryParameters)} return
+     * {@link RcsMessageStore#getRcsMessages(RcsMessageQueryParams)} return
      * {@link RcsIncomingMessage}s.
      */
     public static final int MESSAGE_TYPE_INCOMING = 0x0001;
 
     /**
      * Bitmask flag to be used with {@link Builder#setMessageType(int)} to make
-     * {@link RcsMessageStore#getRcsMessages(RcsMessageQueryParameters)} return
+     * {@link RcsMessageStore#getRcsMessages(RcsMessageQueryParams)} return
      * {@link RcsOutgoingMessage}s.
      */
     public static final int MESSAGE_TYPE_OUTGOING = 0x0002;
 
     /**
      * Bitmask flag to be used with {@link Builder#setFileTransferPresence(int)} to make
-     * {@link RcsMessageStore#getRcsMessages(RcsMessageQueryParameters)} return {@link RcsMessage}s
+     * {@link RcsMessageStore#getRcsMessages(RcsMessageQueryParams)} return {@link RcsMessage}s
      * that have an {@link RcsFileTransferPart} attached.
      */
     public static final int MESSAGES_WITH_FILE_TRANSFERS = 0x0004;
 
     /**
      * Bitmask flag to be used with {@link Builder#setFileTransferPresence(int)} to make
-     * {@link RcsMessageStore#getRcsMessages(RcsMessageQueryParameters)} return {@link RcsMessage}s
+     * {@link RcsMessageStore#getRcsMessages(RcsMessageQueryParams)} return {@link RcsMessage}s
      * that don't have an {@link RcsFileTransferPart} attached.
      */
     public static final int MESSAGES_WITHOUT_FILE_TRANSFERS = 0x0008;
@@ -106,7 +106,7 @@
     // The thread that the results should be limited to
     private int mThreadId;
 
-    RcsMessageQueryParameters(int messageType, int fileTransferPresence, String messageLike,
+    RcsMessageQueryParams(int messageType, int fileTransferPresence, String messageLike,
             int threadId, @SortingProperty int sortingProperty, boolean isAscending, int limit) {
         mMessageType = messageType;
         mFileTransferPresence = fileTransferPresence;
@@ -118,7 +118,7 @@
     }
 
     /**
-     * @return Returns the type of {@link RcsMessage}s that this {@link RcsMessageQueryParameters}
+     * @return Returns the type of {@link RcsMessage}s that this {@link RcsMessageQueryParams}
      * is set to query for.
      */
     public int getMessageType() {
@@ -177,7 +177,7 @@
     }
 
     /**
-     * A helper class to build the {@link RcsMessageQueryParameters}.
+     * A helper class to build the {@link RcsMessageQueryParams}.
      */
     public static class Builder {
         private @SortingProperty int mSortingProperty;
@@ -189,8 +189,8 @@
         private int mThreadId = THREAD_ID_NOT_SET;
 
         /**
-         * Creates a new builder for {@link RcsMessageQueryParameters} to be used in
-         * {@link RcsMessageStore#getRcsMessages(RcsMessageQueryParameters)}
+         * Creates a new builder for {@link RcsMessageQueryParams} to be used in
+         * {@link RcsMessageStore#getRcsMessages(RcsMessageQueryParams)}
          *
          */
         public Builder() {
@@ -221,8 +221,8 @@
          *
          * @param messageType The type of message to be returned.
          * @return The same instance of the builder to chain parameters.
-         * @see RcsMessageQueryParameters#MESSAGE_TYPE_INCOMING
-         * @see RcsMessageQueryParameters#MESSAGE_TYPE_OUTGOING
+         * @see RcsMessageQueryParams#MESSAGE_TYPE_INCOMING
+         * @see RcsMessageQueryParams#MESSAGE_TYPE_OUTGOING
          */
         @CheckResult
         public Builder setMessageType(int messageType) {
@@ -235,8 +235,8 @@
          *
          * @param fileTransferPresence Whether file transfers should be included in the result
          * @return The same instance of the builder to chain parameters.
-         * @see RcsMessageQueryParameters#MESSAGES_WITH_FILE_TRANSFERS
-         * @see RcsMessageQueryParameters#MESSAGES_WITHOUT_FILE_TRANSFERS
+         * @see RcsMessageQueryParams#MESSAGES_WITH_FILE_TRANSFERS
+         * @see RcsMessageQueryParams#MESSAGES_WITHOUT_FILE_TRANSFERS
          */
         @CheckResult
         public Builder setFileTransferPresence(int fileTransferPresence) {
@@ -264,7 +264,7 @@
 
         /**
          * Sets the property where the results should be sorted against. Defaults to
-         * {@link RcsMessageQueryParameters.SortingProperty#SORT_BY_CREATION_ORDER}
+         * {@link RcsMessageQueryParams.SortingProperty#SORT_BY_CREATION_ORDER}
          *
          * @param sortingProperty against which property the results should be sorted
          * @return The same instance of the builder to chain parameters.
@@ -305,14 +305,14 @@
         }
 
         /**
-         * Builds the {@link RcsMessageQueryParameters} to use in
-         * {@link RcsMessageStore#getRcsMessages(RcsMessageQueryParameters)}
+         * Builds the {@link RcsMessageQueryParams} to use in
+         * {@link RcsMessageStore#getRcsMessages(RcsMessageQueryParams)}
          *
-         * @return An instance of {@link RcsMessageQueryParameters} to use with the message
+         * @return An instance of {@link RcsMessageQueryParams} to use with the message
          * query.
          */
-        public RcsMessageQueryParameters build() {
-            return new RcsMessageQueryParameters(mMessageType, mFileTransferPresence, mMessageLike,
+        public RcsMessageQueryParams build() {
+            return new RcsMessageQueryParams(mMessageType, mFileTransferPresence, mMessageLike,
                     mThreadId, mSortingProperty, mIsAscending, mLimit);
         }
     }
@@ -320,7 +320,7 @@
     /**
      * Parcelable boilerplate below.
      */
-    protected RcsMessageQueryParameters(Parcel in) {
+    private RcsMessageQueryParams(Parcel in) {
         mMessageType = in.readInt();
         mFileTransferPresence = in.readInt();
         mMessageLike = in.readString();
@@ -330,16 +330,16 @@
         mThreadId = in.readInt();
     }
 
-    public static final Creator<RcsMessageQueryParameters> CREATOR =
-            new Creator<RcsMessageQueryParameters>() {
+    public static final Creator<RcsMessageQueryParams> CREATOR =
+            new Creator<RcsMessageQueryParams>() {
                 @Override
-                public RcsMessageQueryParameters createFromParcel(Parcel in) {
-                    return new RcsMessageQueryParameters(in);
+                public RcsMessageQueryParams createFromParcel(Parcel in) {
+                    return new RcsMessageQueryParams(in);
                 }
 
                 @Override
-                public RcsMessageQueryParameters[] newArray(int size) {
-                    return new RcsMessageQueryParameters[size];
+                public RcsMessageQueryParams[] newArray(int size) {
+                    return new RcsMessageQueryParams[size];
                 }
             };
 
diff --git a/telephony/java/android/telephony/ims/RcsMessageQueryResult.java b/telephony/java/android/telephony/ims/RcsMessageQueryResult.java
index c3846fd..5adab76 100644
--- a/telephony/java/android/telephony/ims/RcsMessageQueryResult.java
+++ b/telephony/java/android/telephony/ims/RcsMessageQueryResult.java
@@ -29,13 +29,13 @@
 import java.util.List;
 
 /**
- * The result of a {@link RcsMessageStore#getRcsMessages(RcsMessageQueryParameters)}
+ * The result of a {@link RcsMessageStore#getRcsMessages(RcsMessageQueryParams)}
  * call. This class allows getting the token for querying the next batch of messages in order to
  * prevent handling large amounts of data at once.
  *
- * @hide
+ * @hide - TODO: make public
  */
-public class RcsMessageQueryResult implements Parcelable {
+public final class RcsMessageQueryResult implements Parcelable {
     // The token to continue the query to get the next batch of results
     private RcsQueryContinuationToken mContinuationToken;
     // The message type and message ID pairs for all the messages in this query result
@@ -83,7 +83,7 @@
         return messages;
     }
 
-    protected RcsMessageQueryResult(Parcel in) {
+    private RcsMessageQueryResult(Parcel in) {
         mContinuationToken = in.readParcelable(
                 RcsQueryContinuationToken.class.getClassLoader());
         in.readTypedList(mMessageTypeIdPairs, RcsTypeIdPair.CREATOR);
diff --git a/telephony/java/android/telephony/ims/RcsMessageSnippet.java b/telephony/java/android/telephony/ims/RcsMessageSnippet.java
index 9399c20..565bb99 100644
--- a/telephony/java/android/telephony/ims/RcsMessageSnippet.java
+++ b/telephony/java/android/telephony/ims/RcsMessageSnippet.java
@@ -24,9 +24,9 @@
 /**
  * An immutable summary of the latest {@link RcsMessage} on an {@link RcsThread}
  *
- * @hide TODO: make public
+ * @hide - TODO: make public
  */
-public class RcsMessageSnippet implements Parcelable {
+public final class RcsMessageSnippet implements Parcelable {
     private final String mText;
     private final @RcsMessageStatus int mStatus;
     private final long mTimestamp;
@@ -65,7 +65,7 @@
         return mTimestamp;
     }
 
-    protected RcsMessageSnippet(Parcel in) {
+    private RcsMessageSnippet(Parcel in) {
         mText = in.readString();
         mStatus = in.readInt();
         mTimestamp = in.readLong();
diff --git a/telephony/java/android/telephony/ims/RcsMessageStore.java b/telephony/java/android/telephony/ims/RcsMessageStore.java
index c8c36a8..eca5ed5 100644
--- a/telephony/java/android/telephony/ims/RcsMessageStore.java
+++ b/telephony/java/android/telephony/ims/RcsMessageStore.java
@@ -27,7 +27,7 @@
  * RcsMessageStore is the application interface to RcsProvider and provides access methods to
  * RCS related database tables.
  *
- * @hide - TODO make this public
+ * @hide - TODO: make public
  */
 public class RcsMessageStore {
     /**
@@ -39,7 +39,7 @@
      */
     @WorkerThread
     @NonNull
-    public RcsThreadQueryResult getRcsThreads(@Nullable RcsThreadQueryParameters queryParameters)
+    public RcsThreadQueryResult getRcsThreads(@Nullable RcsThreadQueryParams queryParameters)
             throws RcsMessageStoreException {
         return RcsControllerCall.call(iRcs -> iRcs.getRcsThreads(queryParameters));
     }
@@ -68,7 +68,7 @@
     @WorkerThread
     @NonNull
     public RcsParticipantQueryResult getRcsParticipants(
-            @Nullable RcsParticipantQueryParameters queryParameters)
+            @Nullable RcsParticipantQueryParams queryParameters)
             throws RcsMessageStoreException {
         return RcsControllerCall.call(iRcs -> iRcs.getParticipants(queryParameters));
     }
@@ -99,7 +99,7 @@
     @WorkerThread
     @NonNull
     public RcsMessageQueryResult getRcsMessages(
-            @Nullable RcsMessageQueryParameters queryParameters) throws RcsMessageStoreException {
+            @Nullable RcsMessageQueryParams queryParameters) throws RcsMessageStoreException {
         return RcsControllerCall.call(iRcs -> iRcs.getMessages(queryParameters));
     }
 
@@ -127,7 +127,7 @@
     @WorkerThread
     @NonNull
     public RcsEventQueryResult getRcsEvents(
-            @Nullable RcsEventQueryParameters queryParameters) throws RcsMessageStoreException {
+            @Nullable RcsEventQueryParams queryParameters) throws RcsMessageStoreException {
         return RcsControllerCall.call(iRcs -> iRcs.getEvents(queryParameters));
     }
 
diff --git a/telephony/java/android/telephony/ims/RcsMessageStoreException.java b/telephony/java/android/telephony/ims/RcsMessageStoreException.java
index e158f1a..7c00749 100644
--- a/telephony/java/android/telephony/ims/RcsMessageStoreException.java
+++ b/telephony/java/android/telephony/ims/RcsMessageStoreException.java
@@ -20,7 +20,7 @@
  * An exception that happened on {@link RcsMessageStore} or one of the derived storage classes in
  * {@link android.telephony.ims}
  *
- * @hide TODO: make public
+ * @hide - TODO: make public
  */
 public class RcsMessageStoreException extends Exception {
 
diff --git a/telephony/java/android/telephony/ims/RcsOutgoingMessage.java b/telephony/java/android/telephony/ims/RcsOutgoingMessage.java
index 0bd55ec..dfcdee4 100644
--- a/telephony/java/android/telephony/ims/RcsOutgoingMessage.java
+++ b/telephony/java/android/telephony/ims/RcsOutgoingMessage.java
@@ -24,7 +24,7 @@
 /**
  * This is a single instance of a message sent over RCS.
  *
- * @hide - TODO(109759350) make this public
+ * @hide - TODO: make public
  */
 public class RcsOutgoingMessage extends RcsMessage {
     RcsOutgoingMessage(int id) {
diff --git a/telephony/java/android/telephony/ims/RcsThreadQueryParameters.aidl b/telephony/java/android/telephony/ims/RcsOutgoingMessageCreationParams.aidl
similarity index 93%
copy from telephony/java/android/telephony/ims/RcsThreadQueryParameters.aidl
copy to telephony/java/android/telephony/ims/RcsOutgoingMessageCreationParams.aidl
index 52e73ce..0c38d9f 100644
--- a/telephony/java/android/telephony/ims/RcsThreadQueryParameters.aidl
+++ b/telephony/java/android/telephony/ims/RcsOutgoingMessageCreationParams.aidl
@@ -17,4 +17,4 @@
 
 package android.telephony.ims;
 
-parcelable RcsThreadQueryParameters;
+parcelable RcsOutgoingMessageCreationParams;
diff --git a/telephony/java/android/telephony/ims/RcsOutgoingMessageCreationParams.java b/telephony/java/android/telephony/ims/RcsOutgoingMessageCreationParams.java
new file mode 100644
index 0000000..ca466e8
--- /dev/null
+++ b/telephony/java/android/telephony/ims/RcsOutgoingMessageCreationParams.java
@@ -0,0 +1,89 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.telephony.ims;
+
+import android.os.Parcel;
+import android.os.Parcelable;
+
+/**
+ * {@link RcsOutgoingMessageCreationParams} is a collection of parameters that should be passed
+ * into {@link RcsThread#addOutgoingMessage(RcsOutgoingMessageCreationParams)} to generate an
+ * {@link RcsOutgoingMessage} on that {@link RcsThread}
+ *
+ * @hide - TODO: make public
+ */
+public final class RcsOutgoingMessageCreationParams extends RcsMessageCreationParams
+        implements Parcelable {
+    /**
+     * A builder to instantiate and persist an {@link RcsOutgoingMessage}
+     */
+    public static class Builder extends RcsMessageCreationParams.Builder {
+
+        /**
+         * Creates a new {@link Builder} to create an instance of
+         * {@link RcsOutgoingMessageCreationParams}.
+         *
+         * @param originationTimestamp The timestamp of {@link RcsMessage} creation. The origination
+         *                             timestamp value in milliseconds passed after midnight,
+         *                             January 1, 1970 UTC
+         * @param subscriptionId The subscription ID that was used to send or receive this
+         *                       {@link RcsMessage}
+         * @see android.telephony.SubscriptionInfo#getSubscriptionId()
+         */
+        public Builder(long originationTimestamp, int subscriptionId) {
+            super(originationTimestamp, subscriptionId);
+        }
+
+        /**
+         * Creates configuration parameters for a new message.
+         */
+        public RcsOutgoingMessageCreationParams build() {
+            return new RcsOutgoingMessageCreationParams(this);
+        }
+    }
+
+    private RcsOutgoingMessageCreationParams(Builder builder) {
+        super(builder);
+    }
+
+    private RcsOutgoingMessageCreationParams(Parcel in) {
+        super(in);
+    }
+
+    public static final Creator<RcsOutgoingMessageCreationParams> CREATOR =
+            new Creator<RcsOutgoingMessageCreationParams>() {
+                @Override
+                public RcsOutgoingMessageCreationParams createFromParcel(Parcel in) {
+                    return new RcsOutgoingMessageCreationParams(in);
+                }
+
+                @Override
+                public RcsOutgoingMessageCreationParams[] newArray(int size) {
+                    return new RcsOutgoingMessageCreationParams[size];
+                }
+            };
+
+    @Override
+    public int describeContents() {
+        return 0;
+    }
+
+    @Override
+    public void writeToParcel(Parcel dest, int flags) {
+        super.writeToParcel(dest);
+    }
+}
diff --git a/telephony/java/android/telephony/ims/RcsOutgoingMessageDelivery.java b/telephony/java/android/telephony/ims/RcsOutgoingMessageDelivery.java
index b93f892..5a3062a 100644
--- a/telephony/java/android/telephony/ims/RcsOutgoingMessageDelivery.java
+++ b/telephony/java/android/telephony/ims/RcsOutgoingMessageDelivery.java
@@ -22,7 +22,7 @@
  * This class holds the delivery information of an {@link RcsOutgoingMessage} for each
  * {@link RcsParticipant} that the message was intended for.
  *
- * @hide - TODO(109759350) make this public
+ * @hide - TODO: make public
  */
 public class RcsOutgoingMessageDelivery {
     // The participant that this delivery is intended for
diff --git a/telephony/java/android/telephony/ims/RcsParticipant.java b/telephony/java/android/telephony/ims/RcsParticipant.java
index ce0ad2c..37b827b 100644
--- a/telephony/java/android/telephony/ims/RcsParticipant.java
+++ b/telephony/java/android/telephony/ims/RcsParticipant.java
@@ -21,7 +21,7 @@
 /**
  * RcsParticipant is an RCS capable contact that can participate in {@link RcsThread}s.
  *
- * @hide - TODO(109759350) make this public
+ * @hide - TODO: make public
  */
 public class RcsParticipant {
     // The row ID of this participant in the database
diff --git a/telephony/java/android/telephony/ims/RcsParticipantAliasChangedEvent.java b/telephony/java/android/telephony/ims/RcsParticipantAliasChangedEvent.java
index 04cdf86..aa278b3 100644
--- a/telephony/java/android/telephony/ims/RcsParticipantAliasChangedEvent.java
+++ b/telephony/java/android/telephony/ims/RcsParticipantAliasChangedEvent.java
@@ -18,18 +18,19 @@
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.os.Parcel;
+import android.os.Parcelable;
 
 /**
  * An event that indicates an {@link RcsParticipant}'s alias was changed. Please see US18-2 - GSMA
  * RCC.71 (RCS Universal Profile Service Definition Document)
  *
- * @hide - TODO(109759350) make this public
+ * @hide - TODO: make public
  */
-public class RcsParticipantAliasChangedEvent extends RcsEvent {
+public final class RcsParticipantAliasChangedEvent extends RcsEvent implements Parcelable {
     // The ID of the participant that changed their alias
-    private int mParticipantId;
+    private final int mParticipantId;
     // The new alias of the above participant
-    private String mNewAlias;
+    private final String mNewAlias;
 
     /**
      * Creates a new {@link RcsParticipantAliasChangedEvent}. This event is not persisted into
@@ -98,7 +99,7 @@
                 }
             };
 
-    protected RcsParticipantAliasChangedEvent(Parcel in) {
+    private RcsParticipantAliasChangedEvent(Parcel in) {
         super(in);
         mNewAlias = in.readString();
         mParticipantId = in.readInt();
diff --git a/telephony/java/android/telephony/ims/RcsParticipantQueryParameters.aidl b/telephony/java/android/telephony/ims/RcsParticipantQueryParameters.aidl
deleted file mode 100644
index ea8288c..0000000
--- a/telephony/java/android/telephony/ims/RcsParticipantQueryParameters.aidl
+++ /dev/null
@@ -1,20 +0,0 @@
-/*
- *
- * Copyright 2019, The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.telephony.ims;
-
-parcelable RcsParticipantQueryParameters;
diff --git a/telephony/java/android/telephony/ims/RcsThreadQueryParameters.aidl b/telephony/java/android/telephony/ims/RcsParticipantQueryParams.aidl
similarity index 94%
copy from telephony/java/android/telephony/ims/RcsThreadQueryParameters.aidl
copy to telephony/java/android/telephony/ims/RcsParticipantQueryParams.aidl
index 52e73ce..b7c0f93 100644
--- a/telephony/java/android/telephony/ims/RcsThreadQueryParameters.aidl
+++ b/telephony/java/android/telephony/ims/RcsParticipantQueryParams.aidl
@@ -17,4 +17,4 @@
 
 package android.telephony.ims;
 
-parcelable RcsThreadQueryParameters;
+parcelable RcsParticipantQueryParams;
diff --git a/telephony/java/android/telephony/ims/RcsParticipantQueryParameters.java b/telephony/java/android/telephony/ims/RcsParticipantQueryParams.java
similarity index 89%
rename from telephony/java/android/telephony/ims/RcsParticipantQueryParameters.java
rename to telephony/java/android/telephony/ims/RcsParticipantQueryParams.java
index 3611fc1..57c67fa 100644
--- a/telephony/java/android/telephony/ims/RcsParticipantQueryParameters.java
+++ b/telephony/java/android/telephony/ims/RcsParticipantQueryParams.java
@@ -28,12 +28,12 @@
 
 /**
  * The parameters to pass into
- * {@link RcsMessageStore#getRcsParticipants(RcsParticipantQueryParameters)} in order to select a
+ * {@link RcsMessageStore#getRcsParticipants(RcsParticipantQueryParams)} in order to select a
  * subset of {@link RcsThread}s present in the message store.
  *
- * @hide TODO - make the Builder and builder() public. The rest should stay internal only.
+ * @hide - TODO: make public
  */
-public class RcsParticipantQueryParameters implements Parcelable {
+public final class RcsParticipantQueryParams implements Parcelable {
     /**
      * Flag to set with {@link Builder#setSortProperty(int)} to sort the results in the order of
      * creation time for faster query results
@@ -75,7 +75,7 @@
      */
     public static final String PARTICIPANT_QUERY_PARAMETERS_KEY = "participant_query_parameters";
 
-    RcsParticipantQueryParameters(int rcsThreadId, String aliasLike, String canonicalAddressLike,
+    RcsParticipantQueryParams(int rcsThreadId, String aliasLike, String canonicalAddressLike,
             @SortingProperty int sortingProperty, boolean isAscending,
             int limit) {
         mThreadId = rcsThreadId;
@@ -143,7 +143,7 @@
     }
 
     /**
-     * A helper class to build the {@link RcsParticipantQueryParameters}.
+     * A helper class to build the {@link RcsParticipantQueryParams}.
      */
     public static class Builder {
         private String mAliasLike;
@@ -154,8 +154,8 @@
         private int mThreadId;
 
         /**
-         * Creates a new builder for {@link RcsParticipantQueryParameters} to be used in
-         * {@link RcsMessageStore#getRcsParticipants(RcsParticipantQueryParameters)}
+         * Creates a new builder for {@link RcsParticipantQueryParams} to be used in
+         * {@link RcsMessageStore#getRcsParticipants(RcsParticipantQueryParams)}
          */
         public Builder() {
             // empty implementation
@@ -231,7 +231,7 @@
 
         /**
          * Sets the property where the results should be sorted against. Defaults to
-         * {@link RcsParticipantQueryParameters.SortingProperty#SORT_BY_CREATION_ORDER}
+         * {@link RcsParticipantQueryParams.SortingProperty#SORT_BY_CREATION_ORDER}
          *
          * @param sortingProperty against which property the results should be sorted
          * @return The same instance of the builder to chain parameters.
@@ -255,14 +255,14 @@
         }
 
         /**
-         * Builds the {@link RcsParticipantQueryParameters} to use in
-         * {@link RcsMessageStore#getRcsParticipants(RcsParticipantQueryParameters)}
+         * Builds the {@link RcsParticipantQueryParams} to use in
+         * {@link RcsMessageStore#getRcsParticipants(RcsParticipantQueryParams)}
          *
-         * @return An instance of {@link RcsParticipantQueryParameters} to use with the participant
+         * @return An instance of {@link RcsParticipantQueryParams} to use with the participant
          * query.
          */
-        public RcsParticipantQueryParameters build() {
-            return new RcsParticipantQueryParameters(mThreadId, mAliasLike, mCanonicalAddressLike,
+        public RcsParticipantQueryParams build() {
+            return new RcsParticipantQueryParams(mThreadId, mAliasLike, mCanonicalAddressLike,
                     mSortingProperty, mIsAscending, mLimit);
         }
     }
@@ -270,7 +270,7 @@
     /**
      * Parcelable boilerplate below.
      */
-    protected RcsParticipantQueryParameters(Parcel in) {
+    private RcsParticipantQueryParams(Parcel in) {
         mAliasLike = in.readString();
         mCanonicalAddressLike = in.readString();
         mSortingProperty = in.readInt();
@@ -279,16 +279,16 @@
         mThreadId = in.readInt();
     }
 
-    public static final Creator<RcsParticipantQueryParameters> CREATOR =
-            new Creator<RcsParticipantQueryParameters>() {
+    public static final Creator<RcsParticipantQueryParams> CREATOR =
+            new Creator<RcsParticipantQueryParams>() {
                 @Override
-                public RcsParticipantQueryParameters createFromParcel(Parcel in) {
-                    return new RcsParticipantQueryParameters(in);
+                public RcsParticipantQueryParams createFromParcel(Parcel in) {
+                    return new RcsParticipantQueryParams(in);
                 }
 
                 @Override
-                public RcsParticipantQueryParameters[] newArray(int size) {
-                    return new RcsParticipantQueryParameters[size];
+                public RcsParticipantQueryParams[] newArray(int size) {
+                    return new RcsParticipantQueryParams[size];
                 }
             };
 
diff --git a/telephony/java/android/telephony/ims/RcsParticipantQueryResult.java b/telephony/java/android/telephony/ims/RcsParticipantQueryResult.java
index 2f4ab46..4eae39d 100644
--- a/telephony/java/android/telephony/ims/RcsParticipantQueryResult.java
+++ b/telephony/java/android/telephony/ims/RcsParticipantQueryResult.java
@@ -25,13 +25,13 @@
 import java.util.List;
 
 /**
- * The result of a {@link RcsMessageStore#getRcsParticipants(RcsParticipantQueryParameters)}
+ * The result of a {@link RcsMessageStore#getRcsParticipants(RcsParticipantQueryParams)}
  * call. This class allows getting the token for querying the next batch of participants in order to
  * prevent handling large amounts of data at once.
  *
- * @hide
+ * @hide - TODO: make public
  */
-public class RcsParticipantQueryResult implements Parcelable {
+public final class RcsParticipantQueryResult implements Parcelable {
     // A token for the caller to continue their query for the next batch of results
     private RcsQueryContinuationToken mContinuationToken;
     // The list of participant IDs returned with this query
@@ -75,7 +75,7 @@
         return participantList;
     }
 
-    protected RcsParticipantQueryResult(Parcel in) {
+    private RcsParticipantQueryResult(Parcel in) {
         mContinuationToken = in.readParcelable(
                 RcsQueryContinuationToken.class.getClassLoader());
     }
diff --git a/telephony/java/android/telephony/ims/RcsQueryContinuationToken.java b/telephony/java/android/telephony/ims/RcsQueryContinuationToken.java
index e880651..c1ff396 100644
--- a/telephony/java/android/telephony/ims/RcsQueryContinuationToken.java
+++ b/telephony/java/android/telephony/ims/RcsQueryContinuationToken.java
@@ -24,11 +24,17 @@
 import java.lang.annotation.RetentionPolicy;
 
 /**
- * This interface allows using the same implementation for continuation token usage in
- * {@link com.android.providers.telephony.RcsProvider}
- * @hide - TODO make getQueryType() and types public - the rest should stay internal
+ * A token for enabling continuation queries. Instances are acquired through
+ * {@code getContinuationToken} on result objects after initial query is done.
+ *
+ * @see RcsEventQueryResult#getContinuationToken()
+ * @see RcsMessageQueryResult#getContinuationToken()
+ * @see RcsParticipantQueryResult#getContinuationToken()
+ * @see RcsThreadQueryResult#getContinuationToken()
+ *
+ * @hide - TODO: make public
  */
-public class RcsQueryContinuationToken implements Parcelable {
+public final class RcsQueryContinuationToken implements Parcelable {
     /**
      * Denotes that this {@link RcsQueryContinuationToken} token is meant to allow continuing
      * {@link RcsEvent} queries
@@ -116,7 +122,7 @@
         return mQueryType;
     }
 
-    protected RcsQueryContinuationToken(Parcel in) {
+    private RcsQueryContinuationToken(Parcel in) {
         mQueryType = in.readInt();
         mRawQuery = in.readString();
         mLimit = in.readInt();
diff --git a/telephony/java/android/telephony/ims/RcsThread.java b/telephony/java/android/telephony/ims/RcsThread.java
index 238f5e7..8865586 100644
--- a/telephony/java/android/telephony/ims/RcsThread.java
+++ b/telephony/java/android/telephony/ims/RcsThread.java
@@ -28,10 +28,13 @@
  * RcsThread represents a single RCS conversation thread. It holds messages that were sent and
  * received and events that occurred on that thread.
  *
- * @hide - TODO(109759350) make this public
+ * @hide - TODO: make public
  */
 public abstract class RcsThread {
-    // The rcs_participant_thread_id that represents this thread in the database
+    /**
+     * The rcs_participant_thread_id that represents this thread in the database
+     * @hide
+     */
     protected int mThreadId;
 
     /**
@@ -59,10 +62,10 @@
     @WorkerThread
     @NonNull
     public RcsIncomingMessage addIncomingMessage(
-            @NonNull RcsIncomingMessageCreationParameters rcsIncomingMessageCreationParameters)
+            @NonNull RcsIncomingMessageCreationParams rcsIncomingMessageCreationParams)
             throws RcsMessageStoreException {
         return new RcsIncomingMessage(RcsControllerCall.call(iRcs -> iRcs.addIncomingMessage(
-                mThreadId, rcsIncomingMessageCreationParameters)));
+                mThreadId, rcsIncomingMessageCreationParams)));
     }
 
     /**
@@ -73,10 +76,10 @@
     @WorkerThread
     @NonNull
     public RcsOutgoingMessage addOutgoingMessage(
-            @NonNull RcsMessageCreationParameters rcsMessageCreationParameters)
+            @NonNull RcsOutgoingMessageCreationParams rcsOutgoingMessageCreationParams)
             throws RcsMessageStoreException {
         int messageId = RcsControllerCall.call(iRcs -> iRcs.addOutgoingMessage(
-                mThreadId, rcsMessageCreationParameters));
+                mThreadId, rcsOutgoingMessageCreationParams));
 
         return new RcsOutgoingMessage(messageId);
     }
@@ -97,7 +100,7 @@
     /**
      * Convenience function for loading all the {@link RcsMessage}s in this {@link RcsThread}. For
      * a more detailed and paginated query, please use
-     * {@link RcsMessageStore#getRcsMessages(RcsMessageQueryParameters)}
+     * {@link RcsMessageStore#getRcsMessages(RcsMessageQueryParams)}
      *
      * @return Loads the {@link RcsMessage}s in this thread and returns them in an immutable list.
      * @throws RcsMessageStoreException if the messages could not be read from the storage
@@ -105,8 +108,8 @@
     @WorkerThread
     @NonNull
     public RcsMessageQueryResult getMessages() throws RcsMessageStoreException {
-        RcsMessageQueryParameters queryParameters =
-                new RcsMessageQueryParameters.Builder().setThread(this).build();
+        RcsMessageQueryParams queryParameters =
+                new RcsMessageQueryParams.Builder().setThread(this).build();
         return RcsControllerCall.call(iRcs -> iRcs.getMessages(queryParameters));
     }
 
diff --git a/telephony/java/android/telephony/ims/RcsThreadQueryParameters.aidl b/telephony/java/android/telephony/ims/RcsThreadQueryParams.aidl
similarity index 94%
copy from telephony/java/android/telephony/ims/RcsThreadQueryParameters.aidl
copy to telephony/java/android/telephony/ims/RcsThreadQueryParams.aidl
index 52e73ce..3f351dc 100644
--- a/telephony/java/android/telephony/ims/RcsThreadQueryParameters.aidl
+++ b/telephony/java/android/telephony/ims/RcsThreadQueryParams.aidl
@@ -17,4 +17,4 @@
 
 package android.telephony.ims;
 
-parcelable RcsThreadQueryParameters;
+parcelable RcsThreadQueryParams;
diff --git a/telephony/java/android/telephony/ims/RcsThreadQueryParameters.java b/telephony/java/android/telephony/ims/RcsThreadQueryParams.java
similarity index 86%
rename from telephony/java/android/telephony/ims/RcsThreadQueryParameters.java
rename to telephony/java/android/telephony/ims/RcsThreadQueryParams.java
index 4aa4207..ba32e32 100644
--- a/telephony/java/android/telephony/ims/RcsThreadQueryParameters.java
+++ b/telephony/java/android/telephony/ims/RcsThreadQueryParams.java
@@ -33,22 +33,22 @@
 import java.util.Set;
 
 /**
- * The parameters to pass into {@link RcsMessageStore#getRcsThreads(RcsThreadQueryParameters)} in
+ * The parameters to pass into {@link RcsMessageStore#getRcsThreads(RcsThreadQueryParams)} in
  * order to select a subset of {@link RcsThread}s present in the message store.
  *
- * @hide TODO - make the Builder and builder() public. The rest should stay internal only.
+ * @hide - TODO: make public
  */
-public class RcsThreadQueryParameters implements Parcelable {
+public final class RcsThreadQueryParams implements Parcelable {
     /**
      * Bitmask flag to be used with {@link Builder#setThreadType(int)} to make
-     * {@link RcsMessageStore#getRcsThreads(RcsThreadQueryParameters)} return
+     * {@link RcsMessageStore#getRcsThreads(RcsThreadQueryParams)} return
      * {@link RcsGroupThread}s.
      */
     public static final int THREAD_TYPE_GROUP = 0x0001;
 
     /**
      * Bitmask flag to be used with {@link Builder#setThreadType(int)} to make
-     * {@link RcsMessageStore#getRcsThreads(RcsThreadQueryParameters)} return
+     * {@link RcsMessageStore#getRcsThreads(RcsThreadQueryParams)} return
      * {@link Rcs1To1Thread}s.
      */
     public static final int THREAD_TYPE_1_TO_1 = 0x0002;
@@ -86,7 +86,7 @@
      */
     public static final String THREAD_QUERY_PARAMETERS_KEY = "thread_query_parameters";
 
-    RcsThreadQueryParameters(int threadType, Set<RcsParticipant> participants,
+    RcsThreadQueryParams(int threadType, Set<RcsParticipant> participants,
             int limit, int sortingProperty, boolean isAscending) {
         mThreadType = threadType;
         mRcsParticipantIds = convertParticipantSetToIdList(participants);
@@ -148,7 +148,7 @@
     }
 
     /**
-     * A helper class to build the {@link RcsThreadQueryParameters}.
+     * A helper class to build the {@link RcsThreadQueryParams}.
      */
     public static class Builder {
         private int mThreadType;
@@ -158,8 +158,8 @@
         private boolean mIsAscending;
 
         /**
-         * Constructs a {@link RcsThreadQueryParameters.Builder} to help build an
-         * {@link RcsThreadQueryParameters}
+         * Constructs a {@link RcsThreadQueryParams.Builder} to help build an
+         * {@link RcsThreadQueryParams}
          */
         public Builder() {
             mParticipants = new HashSet<>();
@@ -170,8 +170,8 @@
          *
          * @param threadType Whether to limit the query result to group threads.
          * @return The same instance of the builder to chain parameters.
-         * @see RcsThreadQueryParameters#THREAD_TYPE_GROUP
-         * @see RcsThreadQueryParameters#THREAD_TYPE_1_TO_1
+         * @see RcsThreadQueryParams#THREAD_TYPE_GROUP
+         * @see RcsThreadQueryParams#THREAD_TYPE_1_TO_1
          */
         @CheckResult
         public Builder setThreadType(int threadType) {
@@ -253,13 +253,13 @@
         }
 
         /**
-         * Builds the {@link RcsThreadQueryParameters} to use in
-         * {@link RcsMessageStore#getRcsThreads(RcsThreadQueryParameters)}
+         * Builds the {@link RcsThreadQueryParams} to use in
+         * {@link RcsMessageStore#getRcsThreads(RcsThreadQueryParams)}
          *
-         * @return An instance of {@link RcsThreadQueryParameters} to use with the thread query.
+         * @return An instance of {@link RcsThreadQueryParams} to use with the thread query.
          */
-        public RcsThreadQueryParameters build() {
-            return new RcsThreadQueryParameters(mThreadType, mParticipants, mLimit,
+        public RcsThreadQueryParams build() {
+            return new RcsThreadQueryParams(mThreadType, mParticipants, mLimit,
                     mSortingProperty, mIsAscending);
         }
     }
@@ -267,7 +267,7 @@
     /**
      * Parcelable boilerplate below.
      */
-    protected RcsThreadQueryParameters(Parcel in) {
+    private RcsThreadQueryParams(Parcel in) {
         mThreadType = in.readInt();
         mRcsParticipantIds = new ArrayList<>();
         in.readList(mRcsParticipantIds, Integer.class.getClassLoader());
@@ -276,16 +276,16 @@
         mIsAscending = in.readByte() == 1;
     }
 
-    public static final Creator<RcsThreadQueryParameters> CREATOR =
-            new Creator<RcsThreadQueryParameters>() {
+    public static final Creator<RcsThreadQueryParams> CREATOR =
+            new Creator<RcsThreadQueryParams>() {
                 @Override
-                public RcsThreadQueryParameters createFromParcel(Parcel in) {
-                    return new RcsThreadQueryParameters(in);
+                public RcsThreadQueryParams createFromParcel(Parcel in) {
+                    return new RcsThreadQueryParams(in);
                 }
 
                 @Override
-                public RcsThreadQueryParameters[] newArray(int size) {
-                    return new RcsThreadQueryParameters[size];
+                public RcsThreadQueryParams[] newArray(int size) {
+                    return new RcsThreadQueryParams[size];
                 }
             };
 
diff --git a/telephony/java/android/telephony/ims/RcsThreadQueryResult.java b/telephony/java/android/telephony/ims/RcsThreadQueryResult.java
index 6515933..a91126b 100644
--- a/telephony/java/android/telephony/ims/RcsThreadQueryResult.java
+++ b/telephony/java/android/telephony/ims/RcsThreadQueryResult.java
@@ -29,13 +29,13 @@
 import java.util.List;
 
 /**
- * The result of a {@link RcsMessageStore#getRcsThreads(RcsThreadQueryParameters)}
+ * The result of a {@link RcsMessageStore#getRcsThreads(RcsThreadQueryParams)}
  * call. This class allows getting the token for querying the next batch of threads in order to
  * prevent handling large amounts of data at once.
  *
- * @hide
+ * @hide - TODO: make public
  */
-public class RcsThreadQueryResult implements Parcelable {
+public final class RcsThreadQueryResult implements Parcelable {
     // A token for the caller to continue their query for the next batch of results
     private RcsQueryContinuationToken mContinuationToken;
     // The list of thread IDs returned with this query
@@ -84,7 +84,7 @@
         return rcsThreads;
     }
 
-    protected RcsThreadQueryResult(Parcel in) {
+    private RcsThreadQueryResult(Parcel in) {
         mContinuationToken = in.readParcelable(
             RcsQueryContinuationToken.class.getClassLoader());
         mRcsThreadIds = new ArrayList<>();
diff --git a/telephony/java/android/telephony/ims/aidl/IRcs.aidl b/telephony/java/android/telephony/ims/aidl/IRcs.aidl
index a399786..2478f8c 100644
--- a/telephony/java/android/telephony/ims/aidl/IRcs.aidl
+++ b/telephony/java/android/telephony/ims/aidl/IRcs.aidl
@@ -17,18 +17,18 @@
 package android.telephony.ims.aidl;
 
 import android.net.Uri;
-import android.telephony.ims.RcsEventQueryParameters;
+import android.telephony.ims.RcsEventQueryParams;
 import android.telephony.ims.RcsEventQueryResult;
-import android.telephony.ims.RcsFileTransferCreationParameters;
-import android.telephony.ims.RcsIncomingMessageCreationParameters;
-import android.telephony.ims.RcsMessageCreationParameters;
+import android.telephony.ims.RcsFileTransferCreationParams;
+import android.telephony.ims.RcsIncomingMessageCreationParams;
 import android.telephony.ims.RcsMessageSnippet;
-import android.telephony.ims.RcsMessageQueryParameters;
+import android.telephony.ims.RcsMessageQueryParams;
 import android.telephony.ims.RcsMessageQueryResult;
-import android.telephony.ims.RcsParticipantQueryParameters;
+import android.telephony.ims.RcsOutgoingMessageCreationParams;
+import android.telephony.ims.RcsParticipantQueryParams;
 import android.telephony.ims.RcsParticipantQueryResult;
 import android.telephony.ims.RcsQueryContinuationToken;
-import android.telephony.ims.RcsThreadQueryParameters;
+import android.telephony.ims.RcsThreadQueryParams;
 import android.telephony.ims.RcsThreadQueryResult;
 
 /**
@@ -39,22 +39,22 @@
     /////////////////////////
     // RcsMessageStore APIs
     /////////////////////////
-    RcsThreadQueryResult getRcsThreads(in RcsThreadQueryParameters queryParameters);
+    RcsThreadQueryResult getRcsThreads(in RcsThreadQueryParams queryParams);
 
     RcsThreadQueryResult getRcsThreadsWithToken(
         in RcsQueryContinuationToken continuationToken);
 
-    RcsParticipantQueryResult getParticipants(in RcsParticipantQueryParameters queryParameters);
+    RcsParticipantQueryResult getParticipants(in RcsParticipantQueryParams queryParams);
 
     RcsParticipantQueryResult getParticipantsWithToken(
         in RcsQueryContinuationToken continuationToken);
 
-    RcsMessageQueryResult getMessages(in RcsMessageQueryParameters queryParameters);
+    RcsMessageQueryResult getMessages(in RcsMessageQueryParams queryParams);
 
     RcsMessageQueryResult getMessagesWithToken(
         in RcsQueryContinuationToken continuationToken);
 
-    RcsEventQueryResult getEvents(in RcsEventQueryParameters queryParameters);
+    RcsEventQueryResult getEvents(in RcsEventQueryParams queryParams);
 
     RcsEventQueryResult getEventsWithToken(
         in RcsQueryContinuationToken continuationToken);
@@ -74,11 +74,11 @@
 
     // Creates a new RcsIncomingMessage on the given thread and returns its row ID
     int addIncomingMessage(int rcsThreadId,
-            in RcsIncomingMessageCreationParameters rcsIncomingMessageCreationParameters);
+            in RcsIncomingMessageCreationParams rcsIncomingMessageCreationParams);
 
     // Creates a new RcsOutgoingMessage on the given thread and returns its row ID
     int addOutgoingMessage(int rcsThreadId,
-            in RcsMessageCreationParameters rcsMessageCreationParameters);
+            in RcsOutgoingMessageCreationParams rcsOutgoingMessageCreationParams);
 
     // TODO: modify RcsProvider URI's to allow deleting a message without specifying its thread
     void deleteMessage(int rcsMessageId, boolean isIncoming, int rcsThreadId, boolean isGroup);
@@ -203,7 +203,7 @@
 
     // Performs the initial write to storage and returns the row ID.
     int storeFileTransfer(int messageId, boolean isIncoming,
-            in RcsFileTransferCreationParameters fileTransferCreationParameters);
+            in RcsFileTransferCreationParams fileTransferCreationParams);
 
     void deleteFileTransfer(int partId);