diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 22459c4..8b4ef03 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -474,7 +474,7 @@
 
         <receiver android:name=".receiver.DefaultSmsSubscriptionChangeReceiver">
             <intent-filter>
-                <action android:name="android.intent.action.ACTION_DEFAULT_SMS_SUBSCRIPTION_CHANGED"/>
+                <action android:name="android.telephony.action.DEFAULT_SMS_SUBSCRIPTION_CHANGED"/>
             </intent-filter>
         </receiver>
 
diff --git a/res/values-az-rAZ/arrays.xml b/res/values-az/arrays.xml
similarity index 100%
rename from res/values-az-rAZ/arrays.xml
rename to res/values-az/arrays.xml
diff --git a/res/values-az-rAZ/strings.xml b/res/values-az/strings.xml
similarity index 100%
rename from res/values-az-rAZ/strings.xml
rename to res/values-az/strings.xml
diff --git a/res/values-bn-rBD/arrays.xml b/res/values-bn/arrays.xml
similarity index 100%
rename from res/values-bn-rBD/arrays.xml
rename to res/values-bn/arrays.xml
diff --git a/res/values-bn-rBD/strings.xml b/res/values-bn/strings.xml
similarity index 100%
rename from res/values-bn-rBD/strings.xml
rename to res/values-bn/strings.xml
diff --git a/res/values-et-rEE/arrays.xml b/res/values-et/arrays.xml
similarity index 100%
rename from res/values-et-rEE/arrays.xml
rename to res/values-et/arrays.xml
diff --git a/res/values-et-rEE/strings.xml b/res/values-et/strings.xml
similarity index 100%
rename from res/values-et-rEE/strings.xml
rename to res/values-et/strings.xml
diff --git a/res/values-eu-rES/arrays.xml b/res/values-eu/arrays.xml
similarity index 100%
rename from res/values-eu-rES/arrays.xml
rename to res/values-eu/arrays.xml
diff --git a/res/values-eu-rES/strings.xml b/res/values-eu/strings.xml
similarity index 100%
rename from res/values-eu-rES/strings.xml
rename to res/values-eu/strings.xml
diff --git a/res/values-gl-rES/arrays.xml b/res/values-gl/arrays.xml
similarity index 100%
rename from res/values-gl-rES/arrays.xml
rename to res/values-gl/arrays.xml
diff --git a/res/values-gl-rES/strings.xml b/res/values-gl/strings.xml
similarity index 100%
rename from res/values-gl-rES/strings.xml
rename to res/values-gl/strings.xml
diff --git a/res/values-gu-rIN/arrays.xml b/res/values-gu/arrays.xml
similarity index 100%
rename from res/values-gu-rIN/arrays.xml
rename to res/values-gu/arrays.xml
diff --git a/res/values-gu-rIN/strings.xml b/res/values-gu/strings.xml
similarity index 100%
rename from res/values-gu-rIN/strings.xml
rename to res/values-gu/strings.xml
diff --git a/res/values-hy-rAM/arrays.xml b/res/values-hy/arrays.xml
similarity index 100%
rename from res/values-hy-rAM/arrays.xml
rename to res/values-hy/arrays.xml
diff --git a/res/values-hy-rAM/strings.xml b/res/values-hy/strings.xml
similarity index 100%
rename from res/values-hy-rAM/strings.xml
rename to res/values-hy/strings.xml
diff --git a/res/values-is-rIS/arrays.xml b/res/values-is/arrays.xml
similarity index 100%
rename from res/values-is-rIS/arrays.xml
rename to res/values-is/arrays.xml
diff --git a/res/values-is-rIS/strings.xml b/res/values-is/strings.xml
similarity index 100%
rename from res/values-is-rIS/strings.xml
rename to res/values-is/strings.xml
diff --git a/res/values-ka-rGE/arrays.xml b/res/values-ka/arrays.xml
similarity index 100%
rename from res/values-ka-rGE/arrays.xml
rename to res/values-ka/arrays.xml
diff --git a/res/values-ka-rGE/strings.xml b/res/values-ka/strings.xml
similarity index 100%
rename from res/values-ka-rGE/strings.xml
rename to res/values-ka/strings.xml
diff --git a/res/values-kk-rKZ/arrays.xml b/res/values-kk/arrays.xml
similarity index 100%
rename from res/values-kk-rKZ/arrays.xml
rename to res/values-kk/arrays.xml
diff --git a/res/values-kk-rKZ/strings.xml b/res/values-kk/strings.xml
similarity index 100%
rename from res/values-kk-rKZ/strings.xml
rename to res/values-kk/strings.xml
diff --git a/res/values-km-rKH/arrays.xml b/res/values-km/arrays.xml
similarity index 100%
rename from res/values-km-rKH/arrays.xml
rename to res/values-km/arrays.xml
diff --git a/res/values-km-rKH/strings.xml b/res/values-km/strings.xml
similarity index 100%
rename from res/values-km-rKH/strings.xml
rename to res/values-km/strings.xml
diff --git a/res/values-kn-rIN/arrays.xml b/res/values-kn/arrays.xml
similarity index 100%
rename from res/values-kn-rIN/arrays.xml
rename to res/values-kn/arrays.xml
diff --git a/res/values-kn-rIN/strings.xml b/res/values-kn/strings.xml
similarity index 100%
rename from res/values-kn-rIN/strings.xml
rename to res/values-kn/strings.xml
diff --git a/res/values-ky-rKG/arrays.xml b/res/values-ky/arrays.xml
similarity index 100%
rename from res/values-ky-rKG/arrays.xml
rename to res/values-ky/arrays.xml
diff --git a/res/values-ky-rKG/strings.xml b/res/values-ky/strings.xml
similarity index 100%
rename from res/values-ky-rKG/strings.xml
rename to res/values-ky/strings.xml
diff --git a/res/values-lo-rLA/arrays.xml b/res/values-lo/arrays.xml
similarity index 100%
rename from res/values-lo-rLA/arrays.xml
rename to res/values-lo/arrays.xml
diff --git a/res/values-lo-rLA/strings.xml b/res/values-lo/strings.xml
similarity index 100%
rename from res/values-lo-rLA/strings.xml
rename to res/values-lo/strings.xml
diff --git a/res/values-mk-rMK/arrays.xml b/res/values-mk/arrays.xml
similarity index 100%
rename from res/values-mk-rMK/arrays.xml
rename to res/values-mk/arrays.xml
diff --git a/res/values-mk-rMK/strings.xml b/res/values-mk/strings.xml
similarity index 100%
rename from res/values-mk-rMK/strings.xml
rename to res/values-mk/strings.xml
diff --git a/res/values-ml-rIN/arrays.xml b/res/values-ml/arrays.xml
similarity index 100%
rename from res/values-ml-rIN/arrays.xml
rename to res/values-ml/arrays.xml
diff --git a/res/values-ml-rIN/strings.xml b/res/values-ml/strings.xml
similarity index 100%
rename from res/values-ml-rIN/strings.xml
rename to res/values-ml/strings.xml
diff --git a/res/values-mn-rMN/arrays.xml b/res/values-mn/arrays.xml
similarity index 100%
rename from res/values-mn-rMN/arrays.xml
rename to res/values-mn/arrays.xml
diff --git a/res/values-mn-rMN/strings.xml b/res/values-mn/strings.xml
similarity index 100%
rename from res/values-mn-rMN/strings.xml
rename to res/values-mn/strings.xml
diff --git a/res/values-mr-rIN/arrays.xml b/res/values-mr/arrays.xml
similarity index 100%
rename from res/values-mr-rIN/arrays.xml
rename to res/values-mr/arrays.xml
diff --git a/res/values-mr-rIN/strings.xml b/res/values-mr/strings.xml
similarity index 100%
rename from res/values-mr-rIN/strings.xml
rename to res/values-mr/strings.xml
diff --git a/res/values-ms-rMY/arrays.xml b/res/values-ms/arrays.xml
similarity index 100%
rename from res/values-ms-rMY/arrays.xml
rename to res/values-ms/arrays.xml
diff --git a/res/values-ms-rMY/strings.xml b/res/values-ms/strings.xml
similarity index 100%
rename from res/values-ms-rMY/strings.xml
rename to res/values-ms/strings.xml
diff --git a/res/values-my-rMM/arrays.xml b/res/values-my/arrays.xml
similarity index 100%
rename from res/values-my-rMM/arrays.xml
rename to res/values-my/arrays.xml
diff --git a/res/values-my-rMM/strings.xml b/res/values-my/strings.xml
similarity index 100%
rename from res/values-my-rMM/strings.xml
rename to res/values-my/strings.xml
diff --git a/res/values-ne-rNP/arrays.xml b/res/values-ne/arrays.xml
similarity index 100%
rename from res/values-ne-rNP/arrays.xml
rename to res/values-ne/arrays.xml
diff --git a/res/values-ne-rNP/strings.xml b/res/values-ne/strings.xml
similarity index 100%
rename from res/values-ne-rNP/strings.xml
rename to res/values-ne/strings.xml
diff --git a/res/values-pa-rIN/arrays.xml b/res/values-pa/arrays.xml
similarity index 100%
rename from res/values-pa-rIN/arrays.xml
rename to res/values-pa/arrays.xml
diff --git a/res/values-pa-rIN/strings.xml b/res/values-pa/strings.xml
similarity index 100%
rename from res/values-pa-rIN/strings.xml
rename to res/values-pa/strings.xml
diff --git a/res/values-si-rLK/arrays.xml b/res/values-si/arrays.xml
similarity index 100%
rename from res/values-si-rLK/arrays.xml
rename to res/values-si/arrays.xml
diff --git a/res/values-si-rLK/strings.xml b/res/values-si/strings.xml
similarity index 100%
rename from res/values-si-rLK/strings.xml
rename to res/values-si/strings.xml
diff --git a/res/values-sq-rAL/arrays.xml b/res/values-sq/arrays.xml
similarity index 100%
rename from res/values-sq-rAL/arrays.xml
rename to res/values-sq/arrays.xml
diff --git a/res/values-sq-rAL/strings.xml b/res/values-sq/strings.xml
similarity index 100%
rename from res/values-sq-rAL/strings.xml
rename to res/values-sq/strings.xml
diff --git a/res/values-ta-rIN/arrays.xml b/res/values-ta/arrays.xml
similarity index 100%
rename from res/values-ta-rIN/arrays.xml
rename to res/values-ta/arrays.xml
diff --git a/res/values-ta-rIN/strings.xml b/res/values-ta/strings.xml
similarity index 100%
rename from res/values-ta-rIN/strings.xml
rename to res/values-ta/strings.xml
diff --git a/res/values-te-rIN/arrays.xml b/res/values-te/arrays.xml
similarity index 100%
rename from res/values-te-rIN/arrays.xml
rename to res/values-te/arrays.xml
diff --git a/res/values-te-rIN/strings.xml b/res/values-te/strings.xml
similarity index 100%
rename from res/values-te-rIN/strings.xml
rename to res/values-te/strings.xml
diff --git a/res/values-ur-rPK/arrays.xml b/res/values-ur/arrays.xml
similarity index 100%
rename from res/values-ur-rPK/arrays.xml
rename to res/values-ur/arrays.xml
diff --git a/res/values-ur-rPK/strings.xml b/res/values-ur/strings.xml
similarity index 100%
rename from res/values-ur-rPK/strings.xml
rename to res/values-ur/strings.xml
diff --git a/res/values-uz-rUZ/arrays.xml b/res/values-uz/arrays.xml
similarity index 100%
rename from res/values-uz-rUZ/arrays.xml
rename to res/values-uz/arrays.xml
diff --git a/res/values-uz-rUZ/strings.xml b/res/values-uz/strings.xml
similarity index 100%
rename from res/values-uz-rUZ/strings.xml
rename to res/values-uz/strings.xml
diff --git a/src/com/android/messaging/mmslib/pdu/PduPersister.java b/src/com/android/messaging/mmslib/pdu/PduPersister.java
index ceb6a85..5c54e7b 100644
--- a/src/com/android/messaging/mmslib/pdu/PduPersister.java
+++ b/src/com/android/messaging/mmslib/pdu/PduPersister.java
@@ -918,7 +918,7 @@
                 }
                 if (data == null) {
                     dataUri = part.getDataUri();
-                    if ((dataUri == null) || (dataUri == uri)) {
+                    if ((dataUri == null) || (dataUri.equals(uri))) {
                         Log.w(TAG, "Can't find data for this part.");
                         return;
                     }
@@ -1202,7 +1202,7 @@
         // 1. New binary data supplied or
         // 2. The Uri of the part is different from the current one.
         if ((part.getData() != null)
-                || (uri != part.getDataUri())) {
+                || (!uri.equals(part.getDataUri()))) {
             persistData(part, uri, contentType, preOpenedFiles);
         }
     }
@@ -1248,7 +1248,8 @@
             for (int i = 0; i < partsNum; i++) {
                 final PduPart part = body.getPart(i);
                 final Uri partUri = part.getDataUri();
-                if ((partUri == null) || !partUri.getAuthority().startsWith("mms")) {
+                if ((partUri == null) || TextUtils.isEmpty(partUri.getAuthority())
+                        || !partUri.getAuthority().startsWith("mms")) {
                     toBeCreated.add(part);
                 } else {
                     toBeUpdated.put(partUri, part);
diff --git a/src/com/android/messaging/ui/BugleActionBarActivity.java b/src/com/android/messaging/ui/BugleActionBarActivity.java
index 80dabb8..5d9c63a 100644
--- a/src/com/android/messaging/ui/BugleActionBarActivity.java
+++ b/src/com/android/messaging/ui/BugleActionBarActivity.java
@@ -19,7 +19,7 @@
 import android.graphics.drawable.ColorDrawable;
 import android.os.Bundle;
 import android.support.v7.app.ActionBar;
-import android.support.v7.app.ActionBarActivity;
+import android.support.v7.app.AppCompatActivity;
 import android.view.ActionMode;
 import android.view.Menu;
 import android.view.MenuInflater;
@@ -40,7 +40,7 @@
  * needs that will be common for all activities.  We can break out the common code if/when we need
  * a version that doesn't use an actionbar.
  */
-public class BugleActionBarActivity extends ActionBarActivity implements ImeUtil.ImeStateHost {
+public class BugleActionBarActivity extends AppCompatActivity implements ImeUtil.ImeStateHost {
     // Tracks the list of observers opting in for IME state change.
     private final Set<ImeUtil.ImeStateObserver> mImeStateObservers = new HashSet<>();
 
diff --git a/src/com/android/messaging/util/UiUtils.java b/src/com/android/messaging/util/UiUtils.java
index 84fe353..e446c73 100644
--- a/src/com/android/messaging/util/UiUtils.java
+++ b/src/com/android/messaging/util/UiUtils.java
@@ -27,7 +27,7 @@
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
 import android.support.v7.app.ActionBar;
-import android.support.v7.app.ActionBarActivity;
+import android.support.v7.app.AppCompatActivity;
 import android.text.Html;
 import android.text.Spanned;
 import android.text.TextPaint;
@@ -370,7 +370,7 @@
         return result.toString();
     }
 
-    public static void setActionBarShadowVisibility(final ActionBarActivity activity, final boolean visible) {
+    public static void setActionBarShadowVisibility(final AppCompatActivity activity, final boolean visible) {
         final ActionBar actionBar = activity.getSupportActionBar();
         actionBar.setElevation(visible ?
                 activity.getResources().getDimensionPixelSize(R.dimen.action_bar_elevation) :