diff --git a/telephony/java/android/telephony/TelephonyManager.java b/telephony/java/android/telephony/TelephonyManager.java
index d63c37a..2ba34c6 100644
--- a/telephony/java/android/telephony/TelephonyManager.java
+++ b/telephony/java/android/telephony/TelephonyManager.java
@@ -5356,18 +5356,30 @@
      * Returns the MMS user agent.
      */
     public String getMmsUserAgent() {
-        if (mContext == null) return null;
-        return SubscriptionManager.getResourcesForSubId(mContext, getSubId()).getString(
-                com.android.internal.R.string.config_mms_user_agent);
+        try {
+            ITelephony telephony = getITelephony();
+            if (telephony != null) {
+                return telephony.getMmsUserAgent(getSubId());
+            }
+        } catch (RemoteException ex) {
+        } catch (NullPointerException ex) {
+        }
+        return null;
     }
 
     /**
      * Returns the MMS user agent profile URL.
      */
     public String getMmsUAProfUrl() {
-        if (mContext == null) return null;
-        return SubscriptionManager.getResourcesForSubId(mContext, getSubId()).getString(
-                com.android.internal.R.string.config_mms_user_agent_profile_url);
+        try {
+            ITelephony telephony = getITelephony();
+            if (telephony != null) {
+                return telephony.getMmsUAProfUrl(getSubId());
+            }
+        } catch (RemoteException ex) {
+        } catch (NullPointerException ex) {
+        }
+        return null;
     }
 
     /**
diff --git a/telephony/java/com/android/internal/telephony/ITelephony.aidl b/telephony/java/com/android/internal/telephony/ITelephony.aidl
index 63aded1..cf1323a 100644
--- a/telephony/java/com/android/internal/telephony/ITelephony.aidl
+++ b/telephony/java/com/android/internal/telephony/ITelephony.aidl
@@ -1986,4 +1986,14 @@
      * outgoing SmsManager operation.
      */
     oneway void enqueueSmsPickResult(String callingPackage, IIntegerConsumer subIdResult);
+
+    /**
+     * Returns the MMS user agent.
+     */
+    String getMmsUserAgent(int subId);
+
+    /**
+     * Returns the MMS user agent profile URL.
+     */
+    String getMmsUAProfUrl(int subId);
 }