Samsung Galaxy A3 (2016)
Turn call barring on or off
You can block certain types of calls such as incoming calls when you're abroad.
Press Phone.
Press MORE.
Press Settings.
Press More settings.
Press Call barring.
Press Voice call.
Press the required barring type.
Key in your barring password and press OK. The default barring password is 0000.
Press the Home key to return to the home screen.
1. 1. Find "Voice call"
2. 2. Turn call barring on or off
3. 3. Return to the home screen