update
update all apps UPDATE ALL APPS UPDATE APPS, APP UPDATES, UPDATE GOOGLE PLAY STORE, APP UPDATES, UPDATE APLLICATIONS, UPDATE ALL APPS, APP STORE UPDATES, UPDATES ALL YOUR APPS. In this Era of Smartphones Boom the biggest problem with any of the Operating system you take Android, Windows, iOS, Blackberry or the Symbian it would be battery drain or Memory issue or Overheating, etc.