title: Push messages do not come when on 3G?
body: <p>I implemented push notification system and I noticed that push messages do not ever come when I am on 3G or 4G (mobile Internet). </p>
  
  <p>When I connect to wifi, they come regularly. </p>
  
  <p>Is this behavior bound to Android OS or we can write a code to change it?</p>