diff --git a/src/com/android/phone/vvm/omtp/OmtpConstants.java b/src/com/android/phone/vvm/omtp/OmtpConstants.java
index 971d2d6..fa3cb63 100644
--- a/src/com/android/phone/vvm/omtp/OmtpConstants.java
+++ b/src/com/android/phone/vvm/omtp/OmtpConstants.java
@@ -188,4 +188,6 @@
         put(RETURN_CODE, RETURN_CODE_VALUES);
     }};
 
+    /** Indicates the client is Google visual voicemail version 1.0. */
+    public static final String CLIENT_TYPE_GOOGLE_10 = "google.vvm.10";
 }
diff --git a/src/com/android/phone/vvm/omtp/SimChangeReceiver.java b/src/com/android/phone/vvm/omtp/SimChangeReceiver.java
index 917374c..95fcb24 100644
--- a/src/com/android/phone/vvm/omtp/SimChangeReceiver.java
+++ b/src/com/android/phone/vvm/omtp/SimChangeReceiver.java
@@ -103,7 +103,7 @@
         Log.i(TAG, "Requesting VVM activation for subId: " + subId);
         SmsManager smsManager = SmsManager.getSmsManagerForSubscriptionId(subId);
         OmtpMessageSender messageSender = new OmtpMessageSender(smsManager,
-                (short) applicationPort, destinationNumber, null,
+                (short) applicationPort, destinationNumber, OmtpConstants.CLIENT_TYPE_GOOGLE_10,
                 OmtpConstants.PROTOCOL_VERSION1_1, null);
         messageSender.requestVvmActivation(null);
     }