Samsung Galaxy J3 (2016)
Android 5.1.1
1 Find "Applications"
Slide your finger downwards starting from the top of the screen.
Press the settings icon.
Press Applications.
2 Turn app notifications on or off
Press Application manager.
Slide your finger left on the screen to find ALL.
Press the required app.
Press the field next to "Show notifications".
If you turn off the function, press OK.
3 Return to the home screen
Press the Home key to return to the home screen.