diff --git a/core/java/android/net/ConnectivityManager.java b/core/java/android/net/ConnectivityManager.java
index de16985..ef4209f 100644
--- a/core/java/android/net/ConnectivityManager.java
+++ b/core/java/android/net/ConnectivityManager.java
@@ -373,10 +373,11 @@
     }
 
     /**
-     * Gets you info about the current data network.
-     * Call {@link NetworkInfo#isConnected()} on the returned {@link NetworkInfo}
-     * to check if the device has a data connection.
-    */
+     * Returns details about the currently active data network. When connected,
+     * this network is the default route for outgoing connections. You should
+     * always check {@link NetworkInfo#isConnected()} before initiating network
+     * traffic. This may return {@code null} when no networks are available.
+     */
     public NetworkInfo getActiveNetworkInfo() {
         try {
             return mService.getActiveNetworkInfo();
@@ -856,4 +857,19 @@
         } catch (RemoteException e) {}
         return false;
     }
+
+    /**
+     * Returns if the currently active data network is metered. A network is
+     * classified as metered when the user is sensitive to heavy data usage on
+     * that connection. You should check this before doing large data transfers,
+     * and warn the user or delay the operation until another network is
+     * available.
+     */
+    public boolean isActiveNetworkMetered() {
+        try {
+            return mService.isActiveNetworkMetered();
+        } catch (RemoteException e) {
+            return false;
+        }
+    }
 }
diff --git a/core/java/android/net/IConnectivityManager.aidl b/core/java/android/net/IConnectivityManager.aidl
index 7046008..92aeff2 100644
--- a/core/java/android/net/IConnectivityManager.aidl
+++ b/core/java/android/net/IConnectivityManager.aidl
@@ -51,6 +51,7 @@
     NetworkState[] getAllNetworkState();
 
     NetworkQuotaInfo getActiveNetworkQuotaInfo();
+    boolean isActiveNetworkMetered();
 
     boolean setRadios(boolean onOff);
 
diff --git a/core/java/android/net/INetworkPolicyManager.aidl b/core/java/android/net/INetworkPolicyManager.aidl
index 89c9c36..81d9302 100644
--- a/core/java/android/net/INetworkPolicyManager.aidl
+++ b/core/java/android/net/INetworkPolicyManager.aidl
@@ -50,5 +50,6 @@
     boolean getRestrictBackground();
 
     NetworkQuotaInfo getNetworkQuotaInfo(in NetworkState state);
+    boolean isNetworkMetered(in NetworkState state);
 
 }