title: How to active application for video calling or chat using Quickblox iOS SDK?
body: <p>I heard about iOS it self wouldn't allow an app to stay longer while its in background. I don't know exact minutes but how I can active my app to handle video / audio calls or for chat functionality. I'm using Quickblox iOS SDK for video/audio calls and chatting.</p>
  
  <p>P.S. I've successfully implemented this functionality only worry about background? Is there a way in Quickblox SDK to achieve this?</p>
  
  <p>Any help/suggestions would be highly appreciated.</p>