diff --git a/src/com/android/phone/PhoneInterfaceManager.java b/src/com/android/phone/PhoneInterfaceManager.java
index 5f7b627..a8fdfea 100755
--- a/src/com/android/phone/PhoneInterfaceManager.java
+++ b/src/com/android/phone/PhoneInterfaceManager.java
@@ -7505,7 +7505,7 @@
      *  1) user data is turned on, or
      *  2) APN is un-metered for this subscription, or
      *  3) APN type is whitelisted. E.g. MMS is whitelisted if
-     *  {@link SubscriptionManager#setAlwaysAllowMmsData} is turned on.
+     *  {@link TelephonyManager#setAlwaysAllowMmsData} is turned on.
      *
      * @return whether data is allowed for a apn type.
      *
@@ -7618,6 +7618,22 @@
         }
     }
 
+    @Override
+    public boolean setAlwaysAllowMmsData(int subId, boolean alwaysAllow) {
+        enforceModifyPermission();
+
+        // Now that all security checks passes, perform the operation as ourselves.
+        final long identity = Binder.clearCallingIdentity();
+        try {
+            Phone phone = getPhone(subId);
+            if (phone == null) return false;
+
+            return phone.getDataEnabledSettings().setAlwaysAllowMmsData(alwaysAllow);
+        } finally {
+            Binder.restoreCallingIdentity(identity);
+        }
+    }
+
     /**
      * Updates whether conference event pacakge handling is enabled.
      * @param isCepEnabled {@code true} if CEP handling is enabled (default), or {@code false}