Samsung Galaxy S21

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When call waiting is turned on, you can answer a new call without ending your ongoing call.

Step 1 of 6

Press the phone icon.

Step 2 of 6

Press the menu icon.

Step 3 of 6

Press Settings.

Step 4 of 6

Press Supplementary services.

Step 5 of 6

Press the indicator next to "Call waiting" below the required SIM to turn the function on or off.

Step 6 of 6

Press the Home key to return to the home screen.