title: The "prefs" URL Scheme is not working in iOS 10 (Beta 1 & 2)
body: <p>I can't get the "prefs" URL Scheme to work in iOS 10 (Beta 1). <br>
  It's set up correctly since the same App works fine on iOS 9.</p>
  
  <p>Is this a bug or did it get renamed / removed?</p>
  
  <p>Code:</p>
  
  <pre><code>let settingsUrl = NSURL(string: "prefs:root=SOMETHING")
  if let url = settingsUrl {
      UIApplication.sharedApplication().openURL(url)
  }
  </code></pre>
  
  <p><strong>Update:</strong> <em>(Beta 2)</em> <br>
  Still not working in Beta 2. <br>
  It seams to be an bug. For example if you want do invite someone using GameCenter in iOS 10 and you're not logged into iMessage, you'll get a popup asking you to log in. But the "Settings" button does absolutely nothing.</p>