Samsung Galaxy A5 (2016)
Android 5.1.1
1 Find "App notifications"
Slide your finger downwards starting from the top of the screen.
Press the settings icon.
Press Sounds and notifications.
Press App notifications.
2 Turn notifications on or off
Press the required app.
Press the indicator next to "Block notifications" to turn the function on or off.
3 Return to the home screen
Press the Home key to return to the home screen.