title: Sound issues fixes for iOS 10 Push Notifications
body: <p>I’ve implemented push notifications for our app.</p>
  
  <p>on iOS 9, the sound words fine.
  on iOS 10, it’s very unpredictable. Fresh install from Xcode on iOS 10.0.2 would bring up my <em>custom</em> sound. reinstall would bring up <em>default</em> sound. I don’t know exactly when but at times I also get <em>no</em> sound.</p>
  
  <p>reading from <a href="https://stackoverflow.com/questions/39400703/ios10-custom-push-notification-sound-not-playing">here</a> and many others my conclusion is that it works after a hard reboot. 2 questions:</p>
  
  <ul>
  <li>Has Apple completely fixed this issue in any version? If so what version?</li>
  <li>After a <em>hard</em> reboot, would the problem <em>completely</em> go away? Or you need to do it again? if so when?</li>
  </ul>