Bugged by annoying app notifications that just keep coming? If you don’t know already, these app notifications also drain your phone’s battery. If you want to turn them off, and you are on Jelly Bean 4.1 and above, here’s how:
On any of your unwanted notifications in your notification bar, long press on the notification for a message box to appear.
Tap on App Info > Untick Show Notifications > OK.