diff --git a/api/current.txt b/api/current.txt
index ce93382..15230c3 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -28855,23 +28855,23 @@
   }
 
   public final class SmsManager {
-    method public android.net.Uri addMultimediaMessageDraft(byte[]);
+    method public android.net.Uri addMultimediaMessageDraft(android.net.Uri);
     method public android.net.Uri addTextMessageDraft(java.lang.String, java.lang.String);
     method public boolean archiveStoredConversation(long, boolean);
     method public boolean deleteStoredConversation(long);
     method public boolean deleteStoredMessage(android.net.Uri);
     method public java.util.ArrayList<java.lang.String> divideMessage(java.lang.String);
-    method public void downloadMultimediaMessage(java.lang.String, android.content.ContentValues, android.app.PendingIntent);
+    method public void downloadMultimediaMessage(java.lang.String, android.net.Uri, android.content.ContentValues, android.app.PendingIntent);
     method public boolean getAutoPersisting();
     method public android.os.Bundle getCarrierConfigValues();
     method public static android.telephony.SmsManager getDefault();
     method public static android.telephony.SmsManager getSmsManagerUsingSubId(long);
     method public long getSubId();
-    method public android.net.Uri importMultimediaMessage(byte[], java.lang.String, long, boolean, boolean);
+    method public android.net.Uri importMultimediaMessage(android.net.Uri, java.lang.String, long, boolean, boolean);
     method public android.net.Uri importTextMessage(java.lang.String, int, java.lang.String, long, boolean, boolean);
     method public void injectSmsPdu(byte[], java.lang.String, android.app.PendingIntent);
     method public void sendDataMessage(java.lang.String, java.lang.String, short, byte[], android.app.PendingIntent, android.app.PendingIntent);
-    method public void sendMultimediaMessage(byte[], java.lang.String, android.content.ContentValues, android.app.PendingIntent);
+    method public void sendMultimediaMessage(android.net.Uri, java.lang.String, android.content.ContentValues, android.app.PendingIntent);
     method public void sendMultipartTextMessage(java.lang.String, java.lang.String, java.util.ArrayList<java.lang.String>, java.util.ArrayList<android.app.PendingIntent>, java.util.ArrayList<android.app.PendingIntent>);
     method public void sendStoredMultimediaMessage(android.net.Uri, android.content.ContentValues, android.app.PendingIntent);
     method public void sendStoredMultipartTextMessage(android.net.Uri, java.lang.String, java.util.ArrayList<android.app.PendingIntent>, java.util.ArrayList<android.app.PendingIntent>);
@@ -28914,6 +28914,7 @@
     field public static final java.lang.String MMS_CONFIG_USER_AGENT = "userAgent";
     field public static final int MMS_ERROR_HTTP_FAILURE = 4; // 0x4
     field public static final int MMS_ERROR_INVALID_APN = 2; // 0x2
+    field public static final int MMS_ERROR_IO_ERROR = 5; // 0x5
     field public static final int MMS_ERROR_UNABLE_CONNECT_MMS = 3; // 0x3
     field public static final int MMS_ERROR_UNSPECIFIED = 1; // 0x1
     field public static final java.lang.String MMS_EXTRA_DATA = "data";
diff --git a/services/core/java/com/android/server/MmsServiceBroker.java b/services/core/java/com/android/server/MmsServiceBroker.java
index 2830b5e..65ad1ce 100644
--- a/services/core/java/com/android/server/MmsServiceBroker.java
+++ b/services/core/java/com/android/server/MmsServiceBroker.java
@@ -192,29 +192,30 @@
     // Service API calls implementation, proxied to the real MmsService in "com.android.mms.service"
     private final class BinderService extends IMms.Stub {
         @Override
-        public void sendMessage(long subId, String callingPkg, byte[] pdu, String locationUrl,
-                ContentValues configOverrides, PendingIntent sentIntent) throws RemoteException {
+        public void sendMessage(long subId, String callingPkg, Uri contentUri,
+                String locationUrl, ContentValues configOverrides, PendingIntent sentIntent)
+                        throws RemoteException {
             mContext.enforceCallingPermission(Manifest.permission.SEND_SMS, "Send MMS message");
             if (getAppOpsManager().noteOp(AppOpsManager.OP_SEND_SMS, Binder.getCallingUid(),
                     callingPkg) != AppOpsManager.MODE_ALLOWED) {
                 return;
             }
-            getServiceGuarded().sendMessage(subId, callingPkg, pdu, locationUrl, configOverrides,
-                    sentIntent);
+            getServiceGuarded().sendMessage(subId, callingPkg, contentUri, locationUrl,
+                    configOverrides, sentIntent);
         }
 
         @Override
         public void downloadMessage(long subId, String callingPkg, String locationUrl,
-                ContentValues configOverrides, PendingIntent downloadedIntent)
-                throws RemoteException {
+                Uri contentUri, ContentValues configOverrides,
+                PendingIntent downloadedIntent) throws RemoteException {
             mContext.enforceCallingPermission(Manifest.permission.RECEIVE_MMS,
                     "Download MMS message");
             if (getAppOpsManager().noteOp(AppOpsManager.OP_RECEIVE_MMS, Binder.getCallingUid(),
                     callingPkg) != AppOpsManager.MODE_ALLOWED) {
                 return;
             }
-            getServiceGuarded().downloadMessage(subId, callingPkg, locationUrl, configOverrides,
-                    downloadedIntent);
+            getServiceGuarded().downloadMessage(subId, callingPkg, locationUrl, contentUri,
+                    configOverrides, downloadedIntent);
         }
 
         @Override
@@ -249,8 +250,9 @@
         }
 
         @Override
-        public Uri importMultimediaMessage(String callingPkg, byte[] pdu, String messageId,
-                long timestampSecs, boolean seen, boolean read) throws RemoteException {
+        public Uri importMultimediaMessage(String callingPkg, Uri contentUri,
+                String messageId, long timestampSecs, boolean seen, boolean read)
+                        throws RemoteException {
             mContext.enforceCallingPermission(Manifest.permission.WRITE_SMS, "Import MMS message");
             if (getAppOpsManager().noteOp(AppOpsManager.OP_WRITE_SMS, Binder.getCallingUid(),
                     callingPkg) != AppOpsManager.MODE_ALLOWED) {
@@ -259,7 +261,7 @@
                 return FAKE_MMS_SENT_URI;
             }
             return getServiceGuarded().importMultimediaMessage(
-                    callingPkg, pdu, messageId, timestampSecs, seen, read);
+                    callingPkg, contentUri, messageId, timestampSecs, seen, read);
         }
 
         @Override
@@ -317,7 +319,8 @@
         }
 
         @Override
-        public Uri addMultimediaMessageDraft(String callingPkg, byte[] pdu) throws RemoteException {
+        public Uri addMultimediaMessageDraft(String callingPkg, Uri contentUri)
+                throws RemoteException {
             mContext.enforceCallingPermission(Manifest.permission.WRITE_SMS, "Add MMS draft");
             if (getAppOpsManager().noteOp(AppOpsManager.OP_WRITE_SMS, Binder.getCallingUid(),
                     callingPkg) != AppOpsManager.MODE_ALLOWED) {
@@ -325,7 +328,7 @@
                 // while writing the TelephonyProvider
                 return FAKE_MMS_DRAFT_URI;
             }
-            return getServiceGuarded().addMultimediaMessageDraft(callingPkg, pdu);
+            return getServiceGuarded().addMultimediaMessageDraft(callingPkg, contentUri);
         }
 
         @Override
diff --git a/telephony/java/com/android/internal/telephony/IMms.aidl b/telephony/java/com/android/internal/telephony/IMms.aidl
index 2aeb42f..63b7a53 100644
--- a/telephony/java/com/android/internal/telephony/IMms.aidl
+++ b/telephony/java/com/android/internal/telephony/IMms.aidl
@@ -30,7 +30,8 @@
      *
      * @param subId the SIM id
      * @param callingPkg the package name of the calling app
-     * @param pdu the MMS message encoded in standard MMS PDU format
+     * @param contentUri the content uri from which to read MMS message encoded in standard MMS
+     *  PDU format
      * @param locationUrl the optional location url for where this message should be sent to
      * @param configOverrides the carrier-specific messaging configuration values to override for
      *  sending the message. See {@link android.telephony.MessagingConfigurationManager} for the
@@ -38,8 +39,8 @@
      * @param sentIntent if not NULL this <code>PendingIntent</code> is
      *  broadcast when the message is successfully sent, or failed
      */
-    void sendMessage(long subId, String callingPkg, in byte[] pdu, String locationUrl,
-            in ContentValues configOverrides, in PendingIntent sentIntent);
+    void sendMessage(long subId, String callingPkg, in Uri contentUri,
+            String locationUrl, in ContentValues configOverrides, in PendingIntent sentIntent);
 
     /**
      * Download an MMS message using known location and transaction id
@@ -48,6 +49,7 @@
      * @param callingPkg the package name of the calling app
      * @param locationUrl the location URL of the MMS message to be downloaded, usually obtained
      *  from the MMS WAP push notification
+     * @param contentUri a contentUri to which the downloaded MMS message will be written
      * @param configOverrides the carrier-specific messaging configuration values to override for
      *  downloading the message. See {@link android.telephony.MessagingConfigurationManager} for the
      *  value names and types.
@@ -55,7 +57,8 @@
      *  broadcast when the message is downloaded, or the download is failed
      */
     void downloadMessage(long subId, String callingPkg, String locationUrl,
-            in ContentValues configOverrides, in PendingIntent downloadedIntent);
+            in Uri contentUri, in ContentValues configOverrides,
+            in PendingIntent downloadedIntent);
 
     /**
      * Update the status of a pending (send-by-IP) MMS message handled by the carrier app.
@@ -104,14 +107,14 @@
       * Import a multimedia message into system's MMS store
       *
       * @param callingPkg the package name of the calling app
-      * @param pdu the PDU of the message to import
+      * @param contentUri the content uri from which to read PDU of the message to import
       * @param messageId the optional message id
       * @param timestampSecs the message timestamp in seconds
       * @param seen if the message is seen
       * @param read if the message is read
       * @return the message URI, null if failed
       */
-    Uri importMultimediaMessage(String callingPkg, in byte[] pdu, String messageId,
+    Uri importMultimediaMessage(String callingPkg, in Uri contentUri, String messageId,
             long timestampSecs, boolean seen, boolean read);
 
     /**
@@ -168,10 +171,10 @@
      * Add a multimedia message draft to system MMS store
      *
      * @param callingPkg the package name of the calling app
-     * @param pdu the PDU data of the draft MMS
+     * @param contentUri the content Uri from which to read PDU data of the draft MMS
      * @return the URI of the stored draft message
      */
-    Uri addMultimediaMessageDraft(String callingPkg, in byte[] pdu);
+    Uri addMultimediaMessageDraft(String callingPkg, in Uri contentUri);
 
     /**
      * Send a system stored MMS message