title: Receive remote notification when iOS device is locked and I'm not responding immediately
body: <p>My app is receiving remote notifications (APNS) and is working for all the common scenarios:</p>
  
  <ul>
  <li>App is not running (didFinishLaunchingWithOptions:)</li>
  <li>App is running and active (didReceiveRemoteNotification:)</li>
  <li>App is running, the phone is locked and I unlock the device as soon as I get the notification (didReceiveRemoteNotification:)</li>
  </ul>
  
  <p>However, not if I in the last case choose not to unlock the device immediately (with the slider) and I wait until the screen goes black again. The message/notification is still shown in the lock screen, but the slider can now only unlock the device and when I do, didReceiveRemoteNotification: doesn't get called at all.</p>