diff --git a/src/com/android/phone/CallHandlerServiceProxy.java b/src/com/android/phone/CallHandlerServiceProxy.java
index 3c7b517..4426fed 100644
--- a/src/com/android/phone/CallHandlerServiceProxy.java
+++ b/src/com/android/phone/CallHandlerServiceProxy.java
@@ -25,7 +25,9 @@
 import android.os.Handler;
 import android.os.IBinder;
 import android.os.Message;
+import android.os.PowerManager;
 import android.os.RemoteException;
+import android.os.SystemClock;
 import android.os.SystemProperties;
 import android.util.Log;
 
@@ -90,6 +92,8 @@
 
     @Override
     public void onDisconnect(Call call) {
+        // Wake up in case the screen was off.
+        wakeUpScreen();
         synchronized (mServiceAndQueueLock) {
             if (mCallHandlerServiceGuarded == null) {
                 if (DBG) {
@@ -103,6 +107,12 @@
         processDisconnect(call);
     }
 
+    private void wakeUpScreen() {
+        Log.d(TAG, "wakeUpScreen()");
+        final PowerManager pm = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE);
+        pm.wakeUp(SystemClock.uptimeMillis());
+    }
+
     private void processDisconnect(Call call) {
         try {
             if (DBG) {