Samsung Galaxy S21 Ultra

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You can block certain types of calls such as incoming calls when you're abroad.

Step 1 of 8

Press the phone icon.

Step 2 of 8

Press the menu icon.

Step 3 of 8

Press Settings.

Step 4 of 8

Press Supplementary services.

Step 5 of 8

Press Call barring below the required SIM.

Step 6 of 8

Press the required barring type to turn the function on or off.

Step 7 of 8

Key in your barring password and press OK.

Step 8 of 8

Press the Home key to return to the home screen.