diff --git a/src/com/android/phone/BluetoothHeadsetService.java b/src/com/android/phone/BluetoothHeadsetService.java
index fec992c..ab298e0 100644
--- a/src/com/android/phone/BluetoothHeadsetService.java
+++ b/src/com/android/phone/BluetoothHeadsetService.java
@@ -650,6 +650,11 @@
             }
             return mHeadsetPriority.get(address.toUpperCase());
         }
+        public int getBatteryUsageHint() {
+            enforceCallingOrSelfPermission(BLUETOOTH_PERM, "Need BLUETOOTH permission");
+
+            return HeadsetBase.getAtInputCount();
+        }
     };
 
     @Override