diff --git a/talk/examples/android/src/org/appspot/apprtc/CallActivity.java b/talk/examples/android/src/org/appspot/apprtc/CallActivity.java
index e2ef91e46a..4f3f52bfe6 100644
--- a/talk/examples/android/src/org/appspot/apprtc/CallActivity.java
+++ b/talk/examples/android/src/org/appspot/apprtc/CallActivity.java
@@ -37,6 +37,7 @@ import android.app.AlertDialog;
 import android.app.FragmentTransaction;
 import android.content.DialogInterface;
 import android.content.Intent;
+import android.content.pm.PackageManager;
 import android.net.Uri;
 import android.opengl.GLSurfaceView;
 import android.os.Bundle;
@@ -93,6 +94,14 @@ public class CallActivity extends Activity
   public static final String EXTRA_RUNTIME =
       "org.appspot.apprtc.RUNTIME";
   private static final String TAG = "CallRTCClient";
+
+  // List of mandatory application permissions.
+  private static final String[] MANDATORY_PERMISSIONS = {
+    "android.permission.MODIFY_AUDIO_SETTINGS",
+    "android.permission.RECORD_AUDIO",
+    "android.permission.INTERNET"
+  };
+
   // Peer connection statistics callback period in ms.
   private static final int STAT_CALLBACK_PERIOD = 1000;
   // Local preview screen position before call is connected.
@@ -186,6 +195,16 @@ public class CallActivity extends Activity
       }
     });
 
+    // Check for mandatory permissions.
+    for (String permission : MANDATORY_PERMISSIONS) {
+      if (checkCallingOrSelfPermission(permission) != PackageManager.PERMISSION_GRANTED) {
+        logAndToast("Permission " + permission + " is not granted");
+        setResult(RESULT_CANCELED);
+        finish();
+        return;
+      }
+    }
+
     // Get Intent parameters.
     final Intent intent = getIntent();
     Uri roomUri = intent.getData();
diff --git a/talk/examples/android/src/org/appspot/apprtc/PeerConnectionClient.java b/talk/examples/android/src/org/appspot/apprtc/PeerConnectionClient.java
index 739c49eb73..41faab1799 100644
--- a/talk/examples/android/src/org/appspot/apprtc/PeerConnectionClient.java
+++ b/talk/examples/android/src/org/appspot/apprtc/PeerConnectionClient.java
@@ -418,6 +418,8 @@ public class PeerConnectionClient {
     // TCP candidates are only useful when connecting to a server that supports
     // ICE-TCP.
     rtcConfig.tcpCandidatePolicy = PeerConnection.TcpCandidatePolicy.DISABLED;
+    rtcConfig.bundlePolicy = PeerConnection.BundlePolicy.MAXBUNDLE;
+    rtcConfig.rtcpMuxPolicy = PeerConnection.RtcpMuxPolicy.REQUIRE;
 
     peerConnection = factory.createPeerConnection(
         rtcConfig, pcConstraints, pcObserver);