diff --git a/framework-t/src/android/app/usage/NetworkStatsManager.java b/framework-t/src/android/app/usage/NetworkStatsManager.java
index 84adef5..5ce7e59 100644
--- a/framework-t/src/android/app/usage/NetworkStatsManager.java
+++ b/framework-t/src/android/app/usage/NetworkStatsManager.java
@@ -41,6 +41,7 @@
 import android.net.NetworkTemplate;
 import android.net.UnderlyingNetworkInfo;
 import android.net.netstats.IUsageCallback;
+import android.net.netstats.NetworkStatsDataMigrationUtils;
 import android.net.netstats.provider.INetworkStatsProviderCallback;
 import android.net.netstats.provider.NetworkStatsProvider;
 import android.os.Build;
@@ -126,17 +127,12 @@
     private final INetworkStatsService mService;
 
     /**
-     * Type constants for reading different types of Data Usage.
+     * @deprecated Use {@link NetworkStatsDataMigrationUtils#PREFIX_XT}
+     * instead.
      * @hide
      */
-    // @SystemApi(client = MODULE_LIBRARIES)
+    @Deprecated
     public static final String PREFIX_DEV = "dev";
-    /** @hide */
-    public static final String PREFIX_XT = "xt";
-    /** @hide */
-    public static final String PREFIX_UID = "uid";
-    /** @hide */
-    public static final String PREFIX_UID_TAG = "uid_tag";
 
     /** @hide */
     public static final int FLAG_POLL_ON_OPEN = 1 << 0;
diff --git a/service-t/src/com/android/server/net/NetworkStatsService.java b/service-t/src/com/android/server/net/NetworkStatsService.java
index 748b0ae..9f3371b 100644
--- a/service-t/src/com/android/server/net/NetworkStatsService.java
+++ b/service-t/src/com/android/server/net/NetworkStatsService.java
@@ -20,9 +20,6 @@
 import static android.Manifest.permission.READ_NETWORK_USAGE_HISTORY;
 import static android.Manifest.permission.UPDATE_DEVICE_STATS;
 import static android.app.usage.NetworkStatsManager.PREFIX_DEV;
-import static android.app.usage.NetworkStatsManager.PREFIX_UID;
-import static android.app.usage.NetworkStatsManager.PREFIX_UID_TAG;
-import static android.app.usage.NetworkStatsManager.PREFIX_XT;
 import static android.content.Intent.ACTION_SHUTDOWN;
 import static android.content.Intent.ACTION_UID_REMOVED;
 import static android.content.Intent.ACTION_USER_REMOVED;
@@ -50,6 +47,9 @@
 import static android.net.TrafficStats.MB_IN_BYTES;
 import static android.net.TrafficStats.UID_TETHERING;
 import static android.net.TrafficStats.UNSUPPORTED;
+import static android.net.netstats.NetworkStatsDataMigrationUtils.PREFIX_UID;
+import static android.net.netstats.NetworkStatsDataMigrationUtils.PREFIX_UID_TAG;
+import static android.net.netstats.NetworkStatsDataMigrationUtils.PREFIX_XT;
 import static android.os.Trace.TRACE_TAG_NETWORK;
 import static android.telephony.SubscriptionManager.INVALID_SUBSCRIPTION_ID;
 import static android.text.format.DateUtils.DAY_IN_MILLIS;