title: Firebase Notification not received when device come offline to online or non-running app runs
body: <p>Firebase cloud notification can not arrive when a device is offline and then comes online after the notifications sent. And also when the app is not running and runs after.</p>
  
  <p>Suppose</p>
  
  <ol>
  <li><p>I sent notification from console. (At this time device is offline)</p></li>
  <li><p>Now when I connect device to Internet the notification cannot arrive.</p></li>
  <li><p>case 2 when app is not running or force-stopped, and then if app is launched the notification doesn't arrive.</p></li>
  </ol>