title: How to send messges via PubNub even if the App is Killed
body: <p>My App is a Tracking App, I use to implement the tracking functionality PubNub like this tutorial : <a href="https://www.pubnub.com/blog/2015-05-06-tracking-receiving-ios-location-data-w-swift-and-mapkit/" rel="nofollow">PubNub Tracking</a></p>
  
  <p>But my problem is, when the user kill the app, the PubNub stop sending messages. </p>
  
  <p>So my question: is there anyway to still sending messages via PubNub even if the app is killed?</p>
  
  <p>Thanks.</p>