title: iOS: Identify User turned off Push Notification from APNS provider
body: <p>I am trying to find if user turned off push notification from APNS provider. </p>
  
  <p>Here is the scenario</p>
  
  <ol>
  <li>User register for APNS and registers the token with Provider.</li>
  <li>User turns off notification from the settings.</li>
  <li>The app is currently not running..</li>
  </ol>
  
  <p>If provider tries to send any push notification to the device will it fail? 
  or if I query the feedback service will it report it?</p>
  
  <p>From my testing so far, the APNS returns success even after user turned off push notification and feedback service does NOT report the token.</p>
  
  <p>Whereas if User uninstall the app I can see the device token on Feedback service.</p>