diff --git a/api/current.txt b/api/current.txt
index 9b7042ab93d93..630b84fa7c245 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -18093,7 +18093,7 @@ package android.net {
     method public void ignoreNetworkWithCaptivePortal(android.net.Network, java.lang.String);
     method public boolean isActiveNetworkMetered();
     method public boolean isDefaultNetworkActive();
-    method public static boolean isNetworkTypeValid(int);
+    method public static deprecated boolean isNetworkTypeValid(int);
     method public void registerNetworkCallback(android.net.NetworkRequest, android.net.ConnectivityManager.NetworkCallback);
     method public void releaseNetworkRequest(android.app.PendingIntent);
     method public void removeDefaultNetworkActiveListener(android.net.ConnectivityManager.OnNetworkActiveListener);
diff --git a/api/system-current.txt b/api/system-current.txt
index 3f734ed5e75c2..e606a008c7afd 100644
--- a/api/system-current.txt
+++ b/api/system-current.txt
@@ -19570,7 +19570,7 @@ package android.net {
     method public void ignoreNetworkWithCaptivePortal(android.net.Network, java.lang.String);
     method public boolean isActiveNetworkMetered();
     method public boolean isDefaultNetworkActive();
-    method public static boolean isNetworkTypeValid(int);
+    method public static deprecated boolean isNetworkTypeValid(int);
     method public void registerNetworkCallback(android.net.NetworkRequest, android.net.ConnectivityManager.NetworkCallback);
     method public void releaseNetworkRequest(android.app.PendingIntent);
     method public void removeDefaultNetworkActiveListener(android.net.ConnectivityManager.OnNetworkActiveListener);
diff --git a/core/java/android/net/ConnectivityManager.java b/core/java/android/net/ConnectivityManager.java
index d8c3361be7cbf..26878c04f9e3f 100644
--- a/core/java/android/net/ConnectivityManager.java
+++ b/core/java/android/net/ConnectivityManager.java
@@ -496,6 +496,8 @@ public class ConnectivityManager {
      * Tests if a given integer represents a valid network type.
      * @param networkType the type to be tested
      * @return a boolean.  {@code true} if the type is valid, else {@code false}
+     * @deprecated All APIs accepting a network type are deprecated. There should be no need to
+     *             validate a network type.
      */
     public static boolean isNetworkTypeValid(int networkType) {
         return networkType >= 0 && networkType <= MAX_NETWORK_TYPE;