diff --git a/api/system-current.txt b/api/system-current.txt
index ba1629c59dc38..4afb29b45a557 100755
--- a/api/system-current.txt
+++ b/api/system-current.txt
@@ -8986,6 +8986,7 @@ package android.telephony {
   public class ServiceState implements android.os.Parcelable {
     method @NonNull public android.telephony.ServiceState createLocationInfoSanitizedCopy(boolean);
     method public void fillInNotifierBundle(@NonNull android.os.Bundle);
+    method public int getDataNetworkType();
     method public int getDataRegistrationState();
     method @Nullable public android.telephony.NetworkRegistrationInfo getNetworkRegistrationInfo(int, int);
     method @NonNull public java.util.List<android.telephony.NetworkRegistrationInfo> getNetworkRegistrationInfoList();
diff --git a/api/test-current.txt b/api/test-current.txt
index c1b997aa2fe8d..2a4af615e86c2 100644
--- a/api/test-current.txt
+++ b/api/test-current.txt
@@ -3018,6 +3018,7 @@ package android.telephony {
 
   public class ServiceState implements android.os.Parcelable {
     method public void addNetworkRegistrationInfo(android.telephony.NetworkRegistrationInfo);
+    method public int getDataNetworkType();
     method public void setCdmaSystemAndNetworkId(int, int);
     method public void setCellBandwidths(int[]);
     method public void setChannelNumber(int);
diff --git a/telephony/java/android/telephony/ServiceState.java b/telephony/java/android/telephony/ServiceState.java
index 2c62d0667e192..ad8ac76642aef 100644
--- a/telephony/java/android/telephony/ServiceState.java
+++ b/telephony/java/android/telephony/ServiceState.java
@@ -1624,7 +1624,8 @@ public class ServiceState implements Parcelable {
      * @return Current data network type
      * @hide
      */
-    @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.P)
+    @SystemApi
+    @TestApi
     public @NetworkType int getDataNetworkType() {
         final NetworkRegistrationInfo iwlanRegInfo = getNetworkRegistrationInfo(
                 NetworkRegistrationInfo.DOMAIN_PS, AccessNetworkConstants.TRANSPORT_TYPE_WLAN);