Expose PreciseDataConnectionState to Public API

1) Remove Unused Parameters for onDataConnectionState:
The data connection state broadcast includes a number of
parameters that are never used anywhere. To prepare for
updated code that relies on PreciseDataConnectionState,
remove the unused parameters that were internal-only and
included in the broadcast.

-LinkProperties
-NetworkCapabilities
-DataRoaming
-DataAllowed
-Interface name

2) Add Disconnecting State for Data Connections

Add a disconnecting state to correct a mismatch
between the internal and externally visible enums.

This will allow apps to know when connections are
in the process of being torn down, which in the case
of radio link issues could be as much as 15 seconds.

3) Expose PreciseDataConnection for Carrier Apps

Exposes the PSL for PreciseDataConnectionState along
with existing fields in the PreciseDataConnectionState
class.

-Make PreciseDataConnectionState public along with some
 of its fields.
-Expose onPreciseDataConnectionStateChanged.
-Add onPreciseDataConnectionStatesChanged to provide PDCS
 for all APNs in one cohesive batch.

4) Cache PreciseDataConnectionState by APN Type

In telephony registry, multiple different APN types
are all piped through the same cache entry, so every
time any APN changes relative to the previous type,
it triggers an update. This also means that when
a registrant requests the data connection state, only
the most recent type's state is updated.

This change caches entries in TelephonyRegistry based
on the APN's type (specifically the type among types
which triggered the change).

Bug: 143083105
Test: make update-api && make offline-sdk-docs
      (no functional change in this CL).
Test: atest FrameworksTelephonyTests

Merged-In: Ib6a769f5a0cae923ca47a842733bd28755a90ed5
Change-Id: Ib6a769f5a0cae923ca47a842733bd28755a90ed5
(cherry picked from commit 4d340f12c9239c83aea6c3c8d8a5bbf0026f33b0)
diff --git a/api/current.txt b/api/current.txt
index 9bc7cf4..77b3ce7 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -44768,6 +44768,7 @@
     method public void onDataConnectionStateChanged(int);
     method public void onDataConnectionStateChanged(int, int);
     method public void onMessageWaitingIndicatorChanged(boolean);
+    method @RequiresPermission("android.permission.MODIFY_PHONE_STATE") public void onPreciseDataConnectionStateChanged(@NonNull android.telephony.PreciseDataConnectionState);
     method public void onServiceStateChanged(android.telephony.ServiceState);
     method @Deprecated public void onSignalStrengthChanged(int);
     method public void onSignalStrengthsChanged(android.telephony.SignalStrength);
@@ -44782,12 +44783,23 @@
     field public static final int LISTEN_EMERGENCY_NUMBER_LIST = 16777216; // 0x1000000
     field public static final int LISTEN_MESSAGE_WAITING_INDICATOR = 4; // 0x4
     field public static final int LISTEN_NONE = 0; // 0x0
+    field @RequiresPermission("android.permission.MODIFY_PHONE_STATE") public static final int LISTEN_PRECISE_DATA_CONNECTION_STATE = 4096; // 0x1000
     field public static final int LISTEN_SERVICE_STATE = 1; // 0x1
     field @Deprecated public static final int LISTEN_SIGNAL_STRENGTH = 2; // 0x2
     field public static final int LISTEN_SIGNAL_STRENGTHS = 256; // 0x100
     field public static final int LISTEN_USER_MOBILE_DATA_STATE = 524288; // 0x80000
   }
 
+  public final class PreciseDataConnectionState implements android.os.Parcelable {
+    method public int describeContents();
+    method public int getLastCauseCode();
+    method @Nullable public android.net.LinkProperties getLinkProperties();
+    method public int getNetworkType();
+    method public int getState();
+    method public void writeToParcel(@NonNull android.os.Parcel, int);
+    field @NonNull public static final android.os.Parcelable.Creator<android.telephony.PreciseDataConnectionState> CREATOR;
+  }
+
   public final class RadioAccessSpecifier implements android.os.Parcelable {
     ctor public RadioAccessSpecifier(int, int[], int[]);
     method public int describeContents();
@@ -45292,6 +45304,7 @@
     field public static final int DATA_CONNECTED = 2; // 0x2
     field public static final int DATA_CONNECTING = 1; // 0x1
     field public static final int DATA_DISCONNECTED = 0; // 0x0
+    field public static final int DATA_DISCONNECTING = 4; // 0x4
     field public static final int DATA_SUSPENDED = 3; // 0x3
     field public static final int DATA_UNKNOWN = -1; // 0xffffffff
     field public static final String EXTRA_CALL_VOICEMAIL_INTENT = "android.telephony.extra.CALL_VOICEMAIL_INTENT";
diff --git a/api/system-current.txt b/api/system-current.txt
index 77cf0a7..a277dd2b 100755
--- a/api/system-current.txt
+++ b/api/system-current.txt
@@ -8566,7 +8566,6 @@
     method public void onOutgoingEmergencyCall(@NonNull android.telephony.emergency.EmergencyNumber);
     method public void onOutgoingEmergencySms(@NonNull android.telephony.emergency.EmergencyNumber);
     method @RequiresPermission("android.permission.READ_PRECISE_PHONE_STATE") public void onPreciseCallStateChanged(@NonNull android.telephony.PreciseCallState);
-    method @RequiresPermission("android.permission.READ_PRECISE_PHONE_STATE") public void onPreciseDataConnectionStateChanged(@NonNull android.telephony.PreciseDataConnectionState);
     method public void onRadioPowerStateChanged(int);
     method public void onSrvccStateChanged(int);
     method public void onVoiceActivationStateChanged(int);
@@ -8576,7 +8575,6 @@
     field @RequiresPermission(android.Manifest.permission.READ_ACTIVE_EMERGENCY_SESSION) public static final int LISTEN_OUTGOING_EMERGENCY_CALL = 268435456; // 0x10000000
     field @RequiresPermission(android.Manifest.permission.READ_ACTIVE_EMERGENCY_SESSION) public static final int LISTEN_OUTGOING_EMERGENCY_SMS = 536870912; // 0x20000000
     field @RequiresPermission("android.permission.READ_PRECISE_PHONE_STATE") public static final int LISTEN_PRECISE_CALL_STATE = 2048; // 0x800
-    field @RequiresPermission("android.permission.READ_PRECISE_PHONE_STATE") public static final int LISTEN_PRECISE_DATA_CONNECTION_STATE = 4096; // 0x1000
     field public static final int LISTEN_RADIO_POWER_STATE_CHANGED = 8388608; // 0x800000
     field @RequiresPermission(android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE) public static final int LISTEN_SRVCC_STATE_CHANGED = 16384; // 0x4000
     field public static final int LISTEN_VOICE_ACTIVATION_STATE = 131072; // 0x20000
@@ -8602,13 +8600,12 @@
   }
 
   public final class PreciseDataConnectionState implements android.os.Parcelable {
-    method public int describeContents();
-    method @Nullable public String getDataConnectionApn();
-    method public int getDataConnectionApnTypeBitMask();
-    method public int getDataConnectionFailCause();
-    method public int getDataConnectionState();
-    method public void writeToParcel(android.os.Parcel, int);
-    field @NonNull public static final android.os.Parcelable.Creator<android.telephony.PreciseDataConnectionState> CREATOR;
+    method @Deprecated @NonNull public String getDataConnectionApn();
+    method @Deprecated public int getDataConnectionApnTypeBitMask();
+    method @Deprecated public int getDataConnectionFailCause();
+    method @Deprecated @Nullable public android.net.LinkProperties getDataConnectionLinkProperties();
+    method @Deprecated public int getDataConnectionNetworkType();
+    method @Deprecated public int getDataConnectionState();
   }
 
   public final class PreciseDisconnectCause {
diff --git a/api/test-current.txt b/api/test-current.txt
index 44498dd..22ac3ab 100644
--- a/api/test-current.txt
+++ b/api/test-current.txt
@@ -3004,6 +3004,10 @@
     field @RequiresPermission("android.permission.READ_ACTIVE_EMERGENCY_SESSION") public static final int LISTEN_OUTGOING_EMERGENCY_SMS = 536870912; // 0x20000000
   }
 
+  public final class PreciseDataConnectionState implements android.os.Parcelable {
+    ctor @Deprecated public PreciseDataConnectionState(int, int, int, @NonNull String, @Nullable android.net.LinkProperties, int);
+  }
+
   public class ServiceState implements android.os.Parcelable {
     method public void addNetworkRegistrationInfo(android.telephony.NetworkRegistrationInfo);
     method public void setCdmaSystemAndNetworkId(int, int);
diff --git a/core/java/android/telephony/PhoneStateListener.java b/core/java/android/telephony/PhoneStateListener.java
index edab97dd..51a9c86 100644
--- a/core/java/android/telephony/PhoneStateListener.java
+++ b/core/java/android/telephony/PhoneStateListener.java
@@ -35,8 +35,8 @@
 import android.telephony.emergency.EmergencyNumber;
 import android.telephony.ims.ImsReasonInfo;
 
-import com.android.internal.telephony.IPhoneStateListener;
 import com.android.internal.annotations.VisibleForTesting;
+import com.android.internal.telephony.IPhoneStateListener;
 
 import dalvik.system.VMRuntime;
 
@@ -188,12 +188,13 @@
     /**
      * Listen for {@link PreciseDataConnectionState} on the data connection (cellular).
      *
-     * @see #onPreciseDataConnectionStateChanged
+     * <p>Requires permission {@link android.Manifest.permission#MODIFY_PHONE_STATE}
+     * or the calling app has carrier privileges
+     * (see {@link TelephonyManager#hasCarrierPrivileges}).
      *
-     * @hide
+     * @see #onPreciseDataConnectionStateChanged
      */
-    @RequiresPermission((android.Manifest.permission.READ_PRECISE_PHONE_STATE))
-    @SystemApi
+    @RequiresPermission((android.Manifest.permission.MODIFY_PHONE_STATE))
     public static final int LISTEN_PRECISE_DATA_CONNECTION_STATE            = 0x00001000;
 
     /**
@@ -688,8 +689,9 @@
     }
 
     /**
-     * Callback invoked when data connection state changes with precise information
-     * on the registered subscription.
+     * Callback providing update about the default/internet data connection on the registered
+     * subscription.
+     *
      * Note, the registration subId comes from {@link TelephonyManager} object which registers
      * PhoneStateListener by {@link TelephonyManager#listen(PhoneStateListener, int)}.
      * If this TelephonyManager object was created with
@@ -697,12 +699,13 @@
      * subId. Otherwise, this callback applies to
      * {@link SubscriptionManager#getDefaultSubscriptionId()}.
      *
-     * @param dataConnectionState {@link PreciseDataConnectionState}
+     * <p>Requires permission {@link android.Manifest.permission#MODIFY_PHONE_STATE}
+     * or the calling app has carrier privileges
+     * (see {@link TelephonyManager#hasCarrierPrivileges}).
      *
-     * @hide
+     * @param dataConnectionState {@link PreciseDataConnectionState}
      */
-    @RequiresPermission((android.Manifest.permission.READ_PRECISE_PHONE_STATE))
-    @SystemApi
+    @RequiresPermission((android.Manifest.permission.MODIFY_PHONE_STATE))
     public void onPreciseDataConnectionStateChanged(
             @NonNull PreciseDataConnectionState dataConnectionState) {
         // default implementation empty
@@ -1011,11 +1014,21 @@
             PhoneStateListener psl = mPhoneStateListenerWeakRef.get();
             if (psl == null) return;
 
-            Binder.withCleanCallingIdentity(() -> mExecutor.execute(
-                    () -> {
-                        psl.onDataConnectionStateChanged(state, networkType);
-                        psl.onDataConnectionStateChanged(state);
-                    }));
+            if (state == TelephonyManager.DATA_DISCONNECTING
+                    && VMRuntime.getRuntime().getTargetSdkVersion() < Build.VERSION_CODES.R) {
+                Binder.withCleanCallingIdentity(() -> mExecutor.execute(
+                        () -> {
+                            psl.onDataConnectionStateChanged(
+                                    TelephonyManager.DATA_CONNECTED, networkType);
+                            psl.onDataConnectionStateChanged(TelephonyManager.DATA_CONNECTED);
+                        }));
+            } else {
+                Binder.withCleanCallingIdentity(() -> mExecutor.execute(
+                        () -> {
+                            psl.onDataConnectionStateChanged(state, networkType);
+                            psl.onDataConnectionStateChanged(state);
+                        }));
+            }
         }
 
         public void onDataActivity(int direction) {
diff --git a/core/java/android/telephony/TelephonyRegistryManager.java b/core/java/android/telephony/TelephonyRegistryManager.java
index af582a2..fc2dfb8 100644
--- a/core/java/android/telephony/TelephonyRegistryManager.java
+++ b/core/java/android/telephony/TelephonyRegistryManager.java
@@ -21,19 +21,15 @@
 import android.annotation.SystemApi;
 import android.annotation.TestApi;
 import android.content.Context;
-import android.net.LinkProperties;
-import android.net.NetworkCapabilities;
 import android.os.Binder;
 import android.os.Bundle;
 import android.os.Handler;
 import android.os.HandlerExecutor;
 import android.os.RemoteException;
 import android.os.ServiceManager;
-import android.telephony.Annotation.ApnType;
 import android.telephony.Annotation.CallState;
 import android.telephony.Annotation.DataActivityType;
 import android.telephony.Annotation.DataFailureCause;
-import android.telephony.Annotation.DataState;
 import android.telephony.Annotation.NetworkType;
 import android.telephony.Annotation.PreciseCallStates;
 import android.telephony.Annotation.RadioPowerState;
@@ -365,27 +361,18 @@
      * @param subId for which data connection state changed.
      * @param slotIndex for which data connections state changed. Can be derived from subId except
      * when subId is invalid.
-     * @param state latest data connection state, e.g,
-     * @param isDataConnectivityPossible indicates if data is allowed
-     * @param apn the APN {@link ApnSetting#getApnName()} of this data connection.
-     * @param apnType the apnType, "ims" for IMS APN, "emergency" for EMERGENCY APN.
-     * @param linkProperties {@link LinkProperties} associated with this data connection.
-     * @param networkCapabilities {@link NetworkCapabilities} associated with this data connection.
-     * @param networkType associated with this data connection.
-     * @param roaming {@code true} indicates in roaming, {@false} otherwise.
-     * @see TelephonyManager#DATA_DISCONNECTED
-     * @see TelephonyManager#isDataConnectivityPossible()
+     * @param apnType the APN type that triggered this update
+     * @param preciseState the PreciseDataConnectionState
      *
+     * @see android.telephony.PreciseDataConnection
+     * @see TelephonyManager#DATA_DISCONNECTED
      * @hide
      */
-    public void notifyDataConnectionForSubscriber(int slotIndex, int subId, @DataState int state,
-        boolean isDataConnectivityPossible,
-        @ApnType String apn, String apnType, LinkProperties linkProperties,
-        NetworkCapabilities networkCapabilities, int networkType, boolean roaming) {
+    public void notifyDataConnectionForSubscriber(int slotIndex, int subId,
+            String apnType, PreciseDataConnectionState preciseState) {
         try {
-            sRegistry.notifyDataConnectionForSubscriber(slotIndex, subId, state,
-                isDataConnectivityPossible,
-                apn, apnType, linkProperties, networkCapabilities, networkType, roaming);
+            sRegistry.notifyDataConnectionForSubscriber(
+                    slotIndex, subId, apnType, preciseState);
         } catch (RemoteException ex) {
             // system process is dead
         }
@@ -654,25 +641,6 @@
     }
 
     /**
-     * Notify data connection failed on certain subscription.
-     *
-     * @param subId for which data connection failed.
-     * @param slotIndex for which data conenction faled. Can be derived from subId except when subId
-     * is invalid.
-     * @param apnType the apnType, "ims" for IMS APN, "emergency" for EMERGENCY APN. Note each data
-     * connection can support multiple anyTypes.
-     *
-     * @hide
-     */
-    public void notifyDataConnectionFailed(int subId, int slotIndex, String apnType) {
-        try {
-            sRegistry.notifyDataConnectionFailedForSubscriber(slotIndex, subId, apnType);
-        } catch (RemoteException ex) {
-            // system process is dead
-        }
-    }
-
-    /**
      * TODO change from bundle to CellLocation?
      * @hide
      */
diff --git a/core/java/com/android/internal/telephony/ITelephonyRegistry.aidl b/core/java/com/android/internal/telephony/ITelephonyRegistry.aidl
index 4551d16..b1bc2d9 100644
--- a/core/java/com/android/internal/telephony/ITelephonyRegistry.aidl
+++ b/core/java/com/android/internal/telephony/ITelephonyRegistry.aidl
@@ -24,6 +24,8 @@
 import android.telephony.CellInfo;
 import android.telephony.ims.ImsReasonInfo;
 import android.telephony.PhoneCapability;
+import android.telephony.PhysicalChannelConfig;
+import android.telephony.PreciseDataConnectionState;
 import android.telephony.ServiceState;
 import android.telephony.SignalStrength;
 import android.telephony.emergency.EmergencyNumber;
@@ -54,13 +56,8 @@
     @UnsupportedAppUsage(maxTargetSdk = 28)
     void notifyDataActivity(int state);
     void notifyDataActivityForSubscriber(in int subId, int state);
-    void notifyDataConnection(int state, boolean isDataConnectivityPossible,
-            String apn, String apnType, in LinkProperties linkProperties,
-            in NetworkCapabilities networkCapabilities, int networkType, boolean roaming);
-    void notifyDataConnectionForSubscriber(int phoneId, int subId, int state,
-            boolean isDataConnectivityPossible,
-            String apn, String apnType, in LinkProperties linkProperties,
-            in NetworkCapabilities networkCapabilities, int networkType, boolean roaming);
+    void notifyDataConnectionForSubscriber(
+            int phoneId, int subId, String apnType, in PreciseDataConnectionState preciseState);
     @UnsupportedAppUsage
     void notifyDataConnectionFailed(String apnType);
     void notifyDataConnectionFailedForSubscriber(int phoneId, int subId, String apnType);
diff --git a/services/core/java/com/android/server/TelephonyRegistry.java b/services/core/java/com/android/server/TelephonyRegistry.java
index 08cec2e..2c37749 100644
--- a/services/core/java/com/android/server/TelephonyRegistry.java
+++ b/services/core/java/com/android/server/TelephonyRegistry.java
@@ -30,7 +30,6 @@
 import android.content.IntentFilter;
 import android.content.pm.PackageManager;
 import android.net.LinkProperties;
-import android.net.NetworkCapabilities;
 import android.os.Binder;
 import android.os.Build;
 import android.os.Bundle;
@@ -256,7 +255,9 @@
 
     private final LocalLog mListenLog = new LocalLog(100);
 
-    private PreciseDataConnectionState[] mPreciseDataConnectionState;
+    // Per-phoneMap of APN Type to DataConnectionState
+    private List<Map<String, PreciseDataConnectionState>> mPreciseDataConnectionStates =
+            new ArrayList<Map<String, PreciseDataConnectionState>>();
 
     // Nothing here yet, but putting it here in case we want to add more in the future.
     static final int ENFORCE_COARSE_LOCATION_PERMISSION_MASK = 0;
@@ -410,7 +411,6 @@
         mCallQuality = copyOf(mCallQuality, mNumPhones);
         mCallNetworkType = copyOf(mCallNetworkType, mNumPhones);
         mCallAttributes = copyOf(mCallAttributes, mNumPhones);
-        mPreciseDataConnectionState = copyOf(mPreciseDataConnectionState, mNumPhones);
         mOutgoingCallEmergencyNumber = copyOf(mOutgoingCallEmergencyNumber, mNumPhones);
         mOutgoingSmsEmergencyNumber = copyOf(mOutgoingSmsEmergencyNumber, mNumPhones);
 
@@ -418,6 +418,7 @@
         if (mNumPhones < oldNumPhones) {
             cutListToSize(mCellInfo, mNumPhones);
             cutListToSize(mImsReasonInfo, mNumPhones);
+            cutListToSize(mPreciseDataConnectionStates, mNumPhones);
             return;
         }
 
@@ -448,7 +449,7 @@
             mRingingCallState[i] = PreciseCallState.PRECISE_CALL_STATE_IDLE;
             mForegroundCallState[i] = PreciseCallState.PRECISE_CALL_STATE_IDLE;
             mBackgroundCallState[i] = PreciseCallState.PRECISE_CALL_STATE_IDLE;
-            mPreciseDataConnectionState[i] = new PreciseDataConnectionState();
+            mPreciseDataConnectionStates.add(new HashMap<String, PreciseDataConnectionState>());
         }
 
         // Note that location can be null for non-phone builds like
@@ -509,7 +510,7 @@
         mCallQuality = new CallQuality[numPhones];
         mCallNetworkType = new int[numPhones];
         mCallAttributes = new CallAttributes[numPhones];
-        mPreciseDataConnectionState = new PreciseDataConnectionState[numPhones];
+        mPreciseDataConnectionStates = new ArrayList<>();
         mCellInfo = new ArrayList<>();
         mImsReasonInfo = new ArrayList<>();
         mEmergencyNumberList = new HashMap<>();
@@ -541,7 +542,7 @@
             mRingingCallState[i] = PreciseCallState.PRECISE_CALL_STATE_IDLE;
             mForegroundCallState[i] = PreciseCallState.PRECISE_CALL_STATE_IDLE;
             mBackgroundCallState[i] = PreciseCallState.PRECISE_CALL_STATE_IDLE;
-            mPreciseDataConnectionState[i] = new PreciseDataConnectionState();
+            mPreciseDataConnectionStates.add(new HashMap<String, PreciseDataConnectionState>());
         }
 
         // Note that location can be null for non-phone builds like
@@ -896,8 +897,10 @@
                     }
                     if ((events & PhoneStateListener.LISTEN_PRECISE_DATA_CONNECTION_STATE) != 0) {
                         try {
-                            r.callback.onPreciseDataConnectionStateChanged(
-                                    mPreciseDataConnectionState[phoneId]);
+                            for (PreciseDataConnectionState pdcs
+                                    : mPreciseDataConnectionStates.get(phoneId).values()) {
+                                r.callback.onPreciseDataConnectionStateChanged(pdcs);
+                            }
                         } catch (RemoteException ex) {
                             remove(r.binder);
                         }
@@ -911,7 +914,8 @@
                     }
                     if ((events & PhoneStateListener.LISTEN_VOICE_ACTIVATION_STATE) !=0) {
                         try {
-                            r.callback.onVoiceActivationStateChanged(mVoiceActivationState[phoneId]);
+                            r.callback.onVoiceActivationStateChanged(
+                                    mVoiceActivationState[phoneId]);
                         } catch (RemoteException ex) {
                             remove(r.binder);
                         }
@@ -1469,30 +1473,38 @@
         }
     }
 
-    public void notifyDataConnection(int state, boolean isDataAllowed, String apn, String apnType,
-                                     LinkProperties linkProperties,
-                                     NetworkCapabilities networkCapabilities, int networkType,
-                                     boolean roaming) {
-        notifyDataConnectionForSubscriber(SubscriptionManager.DEFAULT_PHONE_INDEX,
-                SubscriptionManager.DEFAULT_SUBSCRIPTION_ID,  state,
-                isDataAllowed, apn, apnType, linkProperties,
-                networkCapabilities, networkType, roaming);
-    }
-
-    public void notifyDataConnectionForSubscriber(int phoneId, int subId, int state,
-                                                  boolean isDataAllowed,
-                                                  String apn, String apnType,
-            LinkProperties linkProperties, NetworkCapabilities networkCapabilities,
-            int networkType, boolean roaming) {
+    /**
+     * Send a notification to registrants that the data connection state has changed.
+     *
+     * @param phoneId the phoneId carrying the data connection
+     * @param subId the subscriptionId for the data connection
+     * @param apnType the APN type that triggered a change in the data connection
+     * @param preciseState a PreciseDataConnectionState that has info about the data connection
+     */
+    public void notifyDataConnectionForSubscriber(
+            int phoneId, int subId, String apnType, PreciseDataConnectionState preciseState) {
         if (!checkNotifyPermission("notifyDataConnection()" )) {
             return;
         }
+
+        String apn = "";
+        int state = TelephonyManager.DATA_UNKNOWN;
+        int networkType = TelephonyManager.NETWORK_TYPE_UNKNOWN;
+        LinkProperties linkProps = null;
+
+        if (preciseState != null) {
+            apn = preciseState.getDataConnectionApn();
+            state = preciseState.getState();
+            networkType = preciseState.getNetworkType();
+            linkProps = preciseState.getDataConnectionLinkProperties();
+        }
         if (VDBG) {
             log("notifyDataConnectionForSubscriber: subId=" + subId
-                + " state=" + state + " isDataAllowed=" + isDataAllowed
-                + "' apn='" + apn + "' apnType=" + apnType + " networkType=" + networkType
-                + " mRecords.size()=" + mRecords.size());
+                    + " state=" + state + "' apn='" + apn
+                    + "' apnType=" + apnType + " networkType=" + networkType
+                    + "' preciseState=" + preciseState);
         }
+
         synchronized (mRecords) {
             if (validatePhoneId(phoneId)) {
                 // We only call the callback when the change is for default APN type.
@@ -1524,33 +1536,45 @@
                     mDataConnectionState[phoneId] = state;
                     mDataConnectionNetworkType[phoneId] = networkType;
                 }
-                mPreciseDataConnectionState[phoneId] = new PreciseDataConnectionState(
-                        state, networkType,
-                        ApnSetting.getApnTypesBitmaskFromString(apnType), apn,
-                        linkProperties, DataFailCause.NONE);
-                for (Record r : mRecords) {
-                    if (r.matchPhoneStateListenerEvent(
-                            PhoneStateListener.LISTEN_PRECISE_DATA_CONNECTION_STATE)
-                            && idMatch(r.subId, subId, phoneId)) {
-                        try {
-                            r.callback.onPreciseDataConnectionStateChanged(
-                                    mPreciseDataConnectionState[phoneId]);
-                        } catch (RemoteException ex) {
-                            mRemoveList.add(r.binder);
+
+                boolean needsNotify = false;
+                // State has been cleared for this APN Type
+                if (preciseState == null) {
+                    // We try clear the state and check if the state was previously not cleared
+                    needsNotify = mPreciseDataConnectionStates.get(phoneId).remove(apnType) != null;
+                } else {
+                    // We need to check to see if the state actually changed
+                    PreciseDataConnectionState oldPreciseState =
+                            mPreciseDataConnectionStates.get(phoneId).put(apnType, preciseState);
+                    needsNotify = !preciseState.equals(oldPreciseState);
+                }
+
+                if (needsNotify) {
+                    for (Record r : mRecords) {
+                        if (r.matchPhoneStateListenerEvent(
+                                PhoneStateListener.LISTEN_PRECISE_DATA_CONNECTION_STATE)
+                                && idMatch(r.subId, subId, phoneId)) {
+                            try {
+                                r.callback.onPreciseDataConnectionStateChanged(preciseState);
+                            } catch (RemoteException ex) {
+                                mRemoveList.add(r.binder);
+                            }
                         }
                     }
                 }
             }
             handleRemoveListLocked();
         }
-        broadcastDataConnectionStateChanged(state, isDataAllowed, apn, apnType, linkProperties,
-                networkCapabilities, roaming, subId);
+
+        broadcastDataConnectionStateChanged(state, apn, apnType, subId);
     }
 
+    /**
+     * Stub to satisfy the ITelephonyRegistry aidl interface; do not use this function.
+     * @see #notifyDataConnectionFailedForSubscriber
+     */
     public void notifyDataConnectionFailed(String apnType) {
-         notifyDataConnectionFailedForSubscriber(SubscriptionManager.DEFAULT_PHONE_INDEX,
-                 SubscriptionManager.DEFAULT_SUBSCRIPTION_ID,
-                 apnType);
+        loge("This function should not be invoked");
     }
 
     public void notifyDataConnectionFailedForSubscriber(int phoneId, int subId, String apnType) {
@@ -1563,17 +1587,20 @@
         }
         synchronized (mRecords) {
             if (validatePhoneId(phoneId)) {
-                mPreciseDataConnectionState[phoneId] = new PreciseDataConnectionState(
-                        TelephonyManager.DATA_UNKNOWN,TelephonyManager.NETWORK_TYPE_UNKNOWN,
-                        ApnSetting.getApnTypesBitmaskFromString(apnType), null, null,
-                        DataFailCause.NONE);
+                mPreciseDataConnectionStates.get(phoneId).put(
+                        apnType,
+                        new PreciseDataConnectionState(
+                                TelephonyManager.DATA_UNKNOWN,
+                                TelephonyManager.NETWORK_TYPE_UNKNOWN,
+                                ApnSetting.getApnTypesBitmaskFromString(apnType), null, null,
+                                DataFailCause.NONE));
                 for (Record r : mRecords) {
                     if (r.matchPhoneStateListenerEvent(
                             PhoneStateListener.LISTEN_PRECISE_DATA_CONNECTION_STATE)
                             && idMatch(r.subId, subId, phoneId)) {
                         try {
                             r.callback.onPreciseDataConnectionStateChanged(
-                                    mPreciseDataConnectionState[phoneId]);
+                                    mPreciseDataConnectionStates.get(phoneId).get(apnType));
                         } catch (RemoteException ex) {
                             mRemoveList.add(r.binder);
                         }
@@ -1738,25 +1765,32 @@
         if (!checkNotifyPermission("notifyPreciseDataConnectionFailed()")) {
             return;
         }
+
+        // precise notify invokes imprecise notify
+        notifyDataConnectionFailedForSubscriber(phoneId, subId, apnType);
+
         synchronized (mRecords) {
             if (validatePhoneId(phoneId)) {
-                mPreciseDataConnectionState[phoneId] = new PreciseDataConnectionState(
-                        TelephonyManager.DATA_UNKNOWN, TelephonyManager.NETWORK_TYPE_UNKNOWN,
-                        ApnSetting.getApnTypesBitmaskFromString(apnType), apn, null, failCause);
+                mPreciseDataConnectionStates.get(phoneId).put(
+                        apnType,
+                        new PreciseDataConnectionState(
+                                TelephonyManager.DATA_UNKNOWN,
+                                TelephonyManager.NETWORK_TYPE_UNKNOWN,
+                                ApnSetting.getApnTypesBitmaskFromString(apnType), null, null,
+                                failCause));
                 for (Record r : mRecords) {
                     if (r.matchPhoneStateListenerEvent(
                             PhoneStateListener.LISTEN_PRECISE_DATA_CONNECTION_STATE)
                             && idMatch(r.subId, subId, phoneId)) {
                         try {
                             r.callback.onPreciseDataConnectionStateChanged(
-                                    mPreciseDataConnectionState[phoneId]);
+                                    mPreciseDataConnectionStates.get(phoneId).get(apnType));
                         } catch (RemoteException ex) {
                             mRemoveList.add(r.binder);
                         }
                     }
                 }
             }
-
             handleRemoveListLocked();
         }
     }
@@ -2014,7 +2048,6 @@
         }
     }
 
-
     @Override
     public void dump(FileDescriptor fd, PrintWriter writer, String[] args) {
         final IndentingPrintWriter pw = new IndentingPrintWriter(writer, "  ");
@@ -2052,7 +2085,7 @@
                 pw.println("mCallQuality=" + mCallQuality[i]);
                 pw.println("mCallAttributes=" + mCallAttributes[i]);
                 pw.println("mCallNetworkType=" + mCallNetworkType[i]);
-                pw.println("mPreciseDataConnectionState=" + mPreciseDataConnectionState[i]);
+                pw.println("mPreciseDataConnectionStates=" + mPreciseDataConnectionStates.get(i));
                 pw.println("mOutgoingCallEmergencyNumber=" + mOutgoingCallEmergencyNumber[i]);
                 pw.println("mOutgoingSmsEmergencyNumber=" + mOutgoingSmsEmergencyNumber[i]);
                 pw.decreaseIndent();
@@ -2212,29 +2245,13 @@
         }
     }
 
-    private void broadcastDataConnectionStateChanged(int state, boolean isDataAllowed, String apn,
-                                                     String apnType, LinkProperties linkProperties,
-                                                     NetworkCapabilities networkCapabilities,
-                                                     boolean roaming, int subId) {
+    private void broadcastDataConnectionStateChanged(int state, String apn,
+                                                     String apnType, int subId) {
         // Note: not reporting to the battery stats service here, because the
         // status bar takes care of that after taking into account all of the
         // required info.
         Intent intent = new Intent(TelephonyIntents.ACTION_ANY_DATA_CONNECTION_STATE_CHANGED);
         intent.putExtra(TelephonyManager.EXTRA_STATE, dataStateToString(state));
-        if (!isDataAllowed) {
-            intent.putExtra(PhoneConstants.NETWORK_UNAVAILABLE_KEY, true);
-        }
-        if (linkProperties != null) {
-            intent.putExtra(PhoneConstants.DATA_LINK_PROPERTIES_KEY, linkProperties);
-            String iface = linkProperties.getInterfaceName();
-            if (iface != null) {
-                intent.putExtra(PhoneConstants.DATA_IFACE_NAME_KEY, iface);
-            }
-        }
-        if (networkCapabilities != null) {
-            intent.putExtra(PhoneConstants.DATA_NETWORK_CAPABILITIES_KEY, networkCapabilities);
-        }
-        if (roaming) intent.putExtra(PhoneConstants.DATA_NETWORK_ROAMING_KEY, true);
 
         intent.putExtra(PhoneConstants.DATA_APN_KEY, apn);
         intent.putExtra(PhoneConstants.DATA_APN_TYPE_KEY, apnType);
diff --git a/telephony/java/android/telephony/PreciseDataConnectionState.java b/telephony/java/android/telephony/PreciseDataConnectionState.java
index 257d634..78ad5c5 100644
--- a/telephony/java/android/telephony/PreciseDataConnectionState.java
+++ b/telephony/java/android/telephony/PreciseDataConnectionState.java
@@ -19,8 +19,10 @@
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.annotation.SystemApi;
+import android.annotation.TestApi;
 import android.annotation.UnsupportedAppUsage;
 import android.net.LinkProperties;
+import android.os.Build;
 import android.os.Parcel;
 import android.os.Parcelable;
 import android.telephony.Annotation.ApnType;
@@ -29,6 +31,8 @@
 import android.telephony.Annotation.NetworkType;
 import android.telephony.data.ApnSetting;
 
+import dalvik.system.VMRuntime;
+
 import java.util.Objects;
 
 
@@ -46,35 +50,62 @@
  *   <li>Data connection fail cause.
  * </ul>
  *
- * @hide
  */
-@SystemApi
 public final class PreciseDataConnectionState implements Parcelable {
 
     private @DataState int mState = TelephonyManager.DATA_UNKNOWN;
     private @NetworkType int mNetworkType = TelephonyManager.NETWORK_TYPE_UNKNOWN;
     private @DataFailureCause int mFailCause = DataFailCause.NONE;
-    private @ApnType int mAPNTypes = ApnSetting.TYPE_NONE;
-    private String mAPN = "";
+    private @ApnType int mApnTypes = ApnSetting.TYPE_NONE;
+    private String mApn = "";
     private LinkProperties mLinkProperties = null;
+    private ApnSetting mApnSetting = null;
 
     /**
      * Constructor
      *
+     * @deprecated this constructor has been superseded and should not be used.
      * @hide
      */
-    @UnsupportedAppUsage
+    @TestApi
+    @Deprecated
+    @UnsupportedAppUsage // (maxTargetSdk = Build.VERSION_CODES.Q)
+    // FIXME: figure out how to remove the UnsupportedAppUsage and delete this constructor
     public PreciseDataConnectionState(@DataState int state,
                                       @NetworkType int networkType,
-                                      @ApnType int apnTypes, String apn,
-                                      LinkProperties linkProperties,
+                                      @ApnType int apnTypes, @NonNull String apn,
+                                      @Nullable LinkProperties linkProperties,
                                       @DataFailureCause int failCause) {
+        this(state, networkType, apnTypes, apn, linkProperties, failCause, null);
+    }
+
+
+    /**
+     * Constructor
+     *
+     * @param state the state of the data connection
+     * @param networkType the access network that is/would carry this data connection
+     * @param apnTypes the APN types that this data connection carries
+     * @param apnSetting if there is a valid APN for this Data Connection, then the APN Settings;
+     *        if there is no valid APN setting for the specific type, then this will be null
+     * @param linkProperties if the data connection is connected, the properties of the connection
+     * @param failCause in case a procedure related to this data connection fails, a non-zero error
+     *        code indicating the cause of the failure.
+     * @hide
+     */
+    public PreciseDataConnectionState(@DataState int state,
+                                      @NetworkType int networkType,
+                                      @ApnType int apnTypes, @NonNull String apn,
+                                      @Nullable LinkProperties linkProperties,
+                                      @DataFailureCause int failCause,
+                                      @Nullable ApnSetting apnSetting) {
         mState = state;
         mNetworkType = networkType;
-        mAPNTypes = apnTypes;
-        mAPN = apn;
+        mApnTypes = apnTypes;
+        mApn = apn;
         mLinkProperties = linkProperties;
         mFailCause = failCause;
+        mApnSetting = apnSetting;
     }
 
     /**
@@ -93,76 +124,160 @@
     private PreciseDataConnectionState(Parcel in) {
         mState = in.readInt();
         mNetworkType = in.readInt();
-        mAPNTypes = in.readInt();
-        mAPN = in.readString();
-        mLinkProperties = (LinkProperties)in.readParcelable(null);
+        mApnTypes = in.readInt();
+        mApn = in.readString();
+        mLinkProperties = (LinkProperties) in.readParcelable(null);
         mFailCause = in.readInt();
+        mApnSetting = (ApnSetting) in.readParcelable(null);
     }
 
     /**
      * Returns the state of data connection that supported the apn types returned by
      * {@link #getDataConnectionApnTypeBitMask()}
+     *
+     * @deprecated use {@link #getState()}
+     * @hide
      */
+    @Deprecated
+    @SystemApi
     public @DataState int getDataConnectionState() {
+        if (mState == TelephonyManager.DATA_DISCONNECTING
+                && VMRuntime.getRuntime().getTargetSdkVersion() < Build.VERSION_CODES.R) {
+            return TelephonyManager.DATA_CONNECTED;
+        }
+
+        return mState;
+    }
+
+    /**
+     * Returns the high-level state of this data connection.
+     */
+    public @DataState int getState() {
         return mState;
     }
 
     /**
      * Returns the network type associated with this data connection.
+     *
+     * @deprecated use {@link getNetworkType()}
      * @hide
      */
+    @Deprecated
+    @SystemApi
     public @NetworkType int getDataConnectionNetworkType() {
         return mNetworkType;
     }
 
     /**
-     * Returns the data connection APN types supported by this connection and triggers
-     * {@link PreciseDataConnectionState} change.
+     * Returns the network type associated with this data connection.
+     *
+     * Return the current/latest (radio) bearer technology that carries this data connection.
+     * For a variety of reasons, the network type can change during the life of the data
+     * connection, and this information is not reliable unless the physical link is currently
+     * active; (there is currently no mechanism to know whether the physical link is active at
+     * any given moment). Thus, this value is generally correct but may not be relied-upon to
+     * represent the status of the radio bearer at any given moment.
      */
-    public @ApnType int getDataConnectionApnTypeBitMask() {
-        return mAPNTypes;
+    public @NetworkType int getNetworkType() {
+        return mNetworkType;
     }
 
     /**
-     * Returns APN {@link ApnSetting} of this data connection.
+     * Returns the APN types mapped to this data connection.
+     *
+     * @deprecated use {@link #getApnSetting()}
+     * @hide
      */
-    @Nullable
+    @Deprecated
+    @SystemApi
+    public @ApnType int getDataConnectionApnTypeBitMask() {
+        return mApnTypes;
+    }
+
+    /**
+     * Returns APN of this data connection.
+     *
+     * @deprecated use {@link #getApnSetting()}
+     * @hide
+     */
+    @NonNull
+    @SystemApi
+    @Deprecated
     public String getDataConnectionApn() {
-        return mAPN;
+        return mApn;
     }
 
     /**
      * Get the properties of the network link {@link LinkProperties}.
+     *
+     * @deprecated use {@link #getLinkProperties()}
      * @hide
      */
-    @UnsupportedAppUsage
+    @Deprecated
+    @SystemApi
+    @Nullable
     public LinkProperties getDataConnectionLinkProperties() {
         return mLinkProperties;
     }
 
     /**
-     * Returns data connection fail cause, in case there was a failure.
+     * Get the properties of the network link {@link LinkProperties}.
      */
-    public @Annotation.DataFailureCause int getDataConnectionFailCause() {
+    @Nullable
+    public LinkProperties getLinkProperties() {
+        return mLinkProperties;
+    }
+
+    /**
+     * Returns the cause code generated by the most recent state change.
+     *
+     * @deprecated use {@link #getLastCauseCode()}
+     * @hide
+     */
+    @Deprecated
+    @SystemApi
+    public int getDataConnectionFailCause() {
         return mFailCause;
     }
 
+    /**
+     * Returns the cause code generated by the most recent state change.
+     *
+     * Return the cause code for the most recent change in {@link #getState}. In the event of an
+     * error, this cause code will be non-zero.
+     */
+    // FIXME(b144774287): some of these cause codes should have a prescribed meaning.
+    public int getLastCauseCode() {
+        return mFailCause;
+    }
+
+    /**
+     * Return the APN Settings for this data connection.
+     *
+     * Returns the ApnSetting that was used to configure this data connection.
+     */
+    // FIXME: This shouldn't be nullable; update once the ApnSetting is supplied correctly
+    @Nullable ApnSetting getApnSetting() {
+        return mApnSetting;
+    }
+
     @Override
     public int describeContents() {
         return 0;
     }
 
     @Override
-    public void writeToParcel(Parcel out, int flags) {
+    public void writeToParcel(@NonNull Parcel out, int flags) {
         out.writeInt(mState);
         out.writeInt(mNetworkType);
-        out.writeInt(mAPNTypes);
-        out.writeString(mAPN);
+        out.writeInt(mApnTypes);
+        out.writeString(mApn);
         out.writeParcelable(mLinkProperties, flags);
         out.writeInt(mFailCause);
+        out.writeParcelable(mApnSetting, flags);
     }
 
-    public static final @android.annotation.NonNull Parcelable.Creator<PreciseDataConnectionState> CREATOR
+    public static final @NonNull Parcelable.Creator<PreciseDataConnectionState> CREATOR
             = new Parcelable.Creator<PreciseDataConnectionState>() {
 
         public PreciseDataConnectionState createFromParcel(Parcel in) {
@@ -176,8 +291,8 @@
 
     @Override
     public int hashCode() {
-        return Objects.hash(mState, mNetworkType, mAPNTypes, mAPN, mLinkProperties,
-                mFailCause);
+        return Objects.hash(mState, mNetworkType, mApnTypes, mApn, mLinkProperties,
+                mFailCause, mApnSetting);
     }
 
     @Override
@@ -188,11 +303,12 @@
         }
 
         PreciseDataConnectionState other = (PreciseDataConnectionState) obj;
-        return Objects.equals(mAPN, other.mAPN) && mAPNTypes == other.mAPNTypes
+        return Objects.equals(mApn, other.mApn) && mApnTypes == other.mApnTypes
                 && mFailCause == other.mFailCause
                 && Objects.equals(mLinkProperties, other.mLinkProperties)
                 && mNetworkType == other.mNetworkType
-                && mState == other.mState;
+                && mState == other.mState
+                && Objects.equals(mApnSetting, other.mApnSetting);
     }
 
     @NonNull
@@ -202,10 +318,11 @@
 
         sb.append("Data Connection state: " + mState);
         sb.append(", Network type: " + mNetworkType);
-        sb.append(", APN types: " + ApnSetting.getApnTypesStringFromBitmask(mAPNTypes));
-        sb.append(", APN: " + mAPN);
+        sb.append(", APN types: " + ApnSetting.getApnTypesStringFromBitmask(mApnTypes));
+        sb.append(", APN: " + mApn);
         sb.append(", Link properties: " + mLinkProperties);
         sb.append(", Fail cause: " + DataFailCause.toString(mFailCause));
+        sb.append(", Apn Setting: " + mApnSetting);
 
         return sb.toString();
     }
diff --git a/telephony/java/android/telephony/TelephonyManager.java b/telephony/java/android/telephony/TelephonyManager.java
index b9a3206..cbfac62 100644
--- a/telephony/java/android/telephony/TelephonyManager.java
+++ b/telephony/java/android/telephony/TelephonyManager.java
@@ -790,18 +790,6 @@
     public static final String EXTRA_DATA_APN = PhoneConstants.DATA_APN_KEY;
 
     /**
-     * The lookup key used with the {@link #ACTION_PRECISE_DATA_CONNECTION_STATE_CHANGED} broadcast
-     * for an String representation of the data interface.
-     *
-     * <p class="note">
-     * Retrieve with
-     * {@link android.content.Intent#getParcelableExtra(String name)}.
-     *
-     * @hide
-     */
-    public static final String EXTRA_DATA_LINK_PROPERTIES_KEY = PhoneConstants.DATA_LINK_PROPERTIES_KEY;
-
-    /**
      * Broadcast intent action for letting the default dialer to know to show voicemail
      * notification.
      *
@@ -5061,6 +5049,7 @@
             DATA_CONNECTING,
             DATA_CONNECTED,
             DATA_SUSPENDED,
+            DATA_DISCONNECTING,
     })
     @Retention(RetentionPolicy.SOURCE)
     public @interface DataState{}
@@ -5077,6 +5066,12 @@
      * traffic is temporarily unavailable. For example, in a 2G network,
      * data activity may be suspended when a voice call arrives. */
     public static final int DATA_SUSPENDED      = 3;
+    /**
+     * Data connection state: Disconnecting.
+     *
+     * IP traffic may be available but will cease working imminently.
+     */
+    public static final int DATA_DISCONNECTING = 4;
 
     /**
      * Returns a constant indicating the current data connection state
@@ -5086,14 +5081,21 @@
      * @see #DATA_CONNECTING
      * @see #DATA_CONNECTED
      * @see #DATA_SUSPENDED
+     * @see #DATA_DISCONNECTING
      */
     public int getDataState() {
         try {
             ITelephony telephony = getITelephony();
             if (telephony == null)
                 return DATA_DISCONNECTED;
-            return telephony.getDataStateForSubId(
+            int state = telephony.getDataStateForSubId(
                     getSubId(SubscriptionManager.getActiveDataSubscriptionId()));
+            if (state == TelephonyManager.DATA_DISCONNECTING
+                    && VMRuntime.getRuntime().getTargetSdkVersion() < Build.VERSION_CODES.R) {
+                return TelephonyManager.DATA_CONNECTED;
+            }
+
+            return state;
         } catch (RemoteException ex) {
             // the phone process is restarting.
             return DATA_DISCONNECTED;
@@ -5114,6 +5116,7 @@
             case DATA_CONNECTING: return "CONNECTING";
             case DATA_CONNECTED: return "CONNECTED";
             case DATA_SUSPENDED: return "SUSPENDED";
+            case DATA_DISCONNECTING: return "DISCONNECTING";
         }
         return "UNKNOWN(" + state + ")";
     }
diff --git a/telephony/java/com/android/internal/telephony/PhoneConstantConversions.java b/telephony/java/com/android/internal/telephony/PhoneConstantConversions.java
index f7f0f29..8640acc 100644
--- a/telephony/java/com/android/internal/telephony/PhoneConstantConversions.java
+++ b/telephony/java/com/android/internal/telephony/PhoneConstantConversions.java
@@ -16,14 +16,10 @@
 
 package com.android.internal.telephony;
 
-import android.telephony.ServiceState;
 import android.telephony.TelephonyManager;
-import android.telephony.PreciseCallState;
 
 import com.android.internal.telephony.PhoneConstants;
 
-import java.util.List;
-
 public class PhoneConstantConversions {
     /**
      * Convert the {@link PhoneConstants.State} enum into the TelephonyManager.CALL_STATE_*
@@ -67,6 +63,8 @@
                 return TelephonyManager.DATA_CONNECTED;
             case SUSPENDED:
                 return TelephonyManager.DATA_SUSPENDED;
+            case DISCONNECTING:
+                return TelephonyManager.DATA_DISCONNECTING;
             default:
                 return TelephonyManager.DATA_DISCONNECTED;
         }
@@ -84,6 +82,8 @@
                 return PhoneConstants.DataState.CONNECTED;
             case TelephonyManager.DATA_SUSPENDED:
                 return PhoneConstants.DataState.SUSPENDED;
+            case TelephonyManager.DATA_DISCONNECTING:
+                return PhoneConstants.DataState.DISCONNECTING;
             default:
                 return PhoneConstants.DataState.DISCONNECTED;
         }
diff --git a/telephony/java/com/android/internal/telephony/PhoneConstants.java b/telephony/java/com/android/internal/telephony/PhoneConstants.java
index 6e63514..888746a 100644
--- a/telephony/java/com/android/internal/telephony/PhoneConstants.java
+++ b/telephony/java/com/android/internal/telephony/PhoneConstants.java
@@ -49,6 +49,7 @@
       * <ul>
       * <li>CONNECTED = IP traffic should be available</li>
       * <li>CONNECTING = Currently setting up data connection</li>
+      * <li>DISCONNECTING = IP temporarily available</li>
       * <li>DISCONNECTED = IP not available</li>
       * <li>SUSPENDED = connection is created but IP traffic is
       *                 temperately not available. i.e. voice call is in place
@@ -65,7 +66,8 @@
         @UnsupportedAppUsage
         DISCONNECTED,
         @UnsupportedAppUsage
-        SUSPENDED;
+        SUSPENDED,
+        DISCONNECTING;
     };
 
     public static final String STATE_KEY = "state";
@@ -98,20 +100,12 @@
 
     public static final String PHONE_NAME_KEY = "phoneName";
     public static final String DATA_NETWORK_TYPE_KEY = "networkType";
-    public static final String DATA_FAILURE_CAUSE_KEY = "failCause";
     public static final String DATA_APN_TYPE_KEY = "apnType";
     public static final String DATA_APN_KEY = "apn";
-    public static final String DATA_LINK_PROPERTIES_KEY = "linkProperties";
-    public static final String DATA_NETWORK_CAPABILITIES_KEY = "networkCapabilities";
 
-    public static final String DATA_IFACE_NAME_KEY = "iface";
-    public static final String NETWORK_UNAVAILABLE_KEY = "networkUnvailable";
-    public static final String DATA_NETWORK_ROAMING_KEY = "networkRoaming";
     public static final String PHONE_IN_ECM_STATE = "phoneinECMState";
     public static final String PHONE_IN_EMERGENCY_CALL = "phoneInEmergencyCall";
 
-    public static final String REASON_LINK_PROPERTIES_CHANGED = "linkPropertiesChanged";
-
     /**
      * Return codes for supplyPinReturnResult and
      * supplyPukReturnResult APIs