diff --git a/core/java/com/android/internal/telephony/ITelephonyRegistry.aidl b/core/java/com/android/internal/telephony/ITelephonyRegistry.aidl
index 2f34aa0..d8e8d67 100644
--- a/core/java/com/android/internal/telephony/ITelephonyRegistry.aidl
+++ b/core/java/com/android/internal/telephony/ITelephonyRegistry.aidl
@@ -60,15 +60,10 @@
     @UnsupportedAppUsage(maxTargetSdk = 28)
     void notifyDataActivity(int state);
     void notifyDataActivityForSubscriber(in int subId, int state);
-    void notifyDataConnection(int state, boolean isDataConnectivityPossible,
-            String apn, String apnType, in LinkProperties linkProperties,
-            in NetworkCapabilities networkCapabilities, int networkType, boolean roaming);
     void notifyDataConnectionForSubscriber(int phoneId, int subId, int state,
             boolean isDataConnectivityPossible,
             String apn, String apnType, in LinkProperties linkProperties,
             in NetworkCapabilities networkCapabilities, int networkType, boolean roaming);
-    @UnsupportedAppUsage
-    void notifyDataConnectionFailed(String apnType);
     void notifyDataConnectionFailedForSubscriber(int phoneId, int subId, String apnType);
     @UnsupportedAppUsage(maxTargetSdk = 28)
     void notifyCellLocation(in Bundle cellLocation);
diff --git a/services/core/java/com/android/server/TelephonyRegistry.java b/services/core/java/com/android/server/TelephonyRegistry.java
index 6bc117b..4a0c7a3 100644
--- a/services/core/java/com/android/server/TelephonyRegistry.java
+++ b/services/core/java/com/android/server/TelephonyRegistry.java
@@ -1496,16 +1496,6 @@
         }
     }
 
-    public void notifyDataConnection(int state, boolean isDataAllowed, String apn, String apnType,
-                                     LinkProperties linkProperties,
-                                     NetworkCapabilities networkCapabilities, int networkType,
-                                     boolean roaming) {
-        notifyDataConnectionForSubscriber(SubscriptionManager.DEFAULT_PHONE_INDEX,
-                SubscriptionManager.DEFAULT_SUBSCRIPTION_ID,  state,
-                isDataAllowed, apn, apnType, linkProperties,
-                networkCapabilities, networkType, roaming);
-    }
-
     public void notifyDataConnectionForSubscriber(int phoneId, int subId, int state,
                                                   boolean isDataAllowed,
                                                   String apn, String apnType,
@@ -1574,12 +1564,6 @@
                 networkCapabilities, roaming, subId);
     }
 
-    public void notifyDataConnectionFailed(String apnType) {
-         notifyDataConnectionFailedForSubscriber(SubscriptionManager.DEFAULT_PHONE_INDEX,
-                 SubscriptionManager.DEFAULT_SUBSCRIPTION_ID,
-                 apnType);
-    }
-
     public void notifyDataConnectionFailedForSubscriber(int phoneId, int subId, String apnType) {
         if (!checkNotifyPermission("notifyDataConnectionFailed()")) {
             return;