Google Pixel 3a
Turning call waiting on or off
When call waiting is turned on, you can answer a new call without ending your ongoing call.
When call waiting is turned on, you can answer a new call without ending your ongoing call.
Press the phone icon.
Press the menu icon.
Press Settings.
Press Calls.
Press Additional settings.
Press the indicator next to "Call waiting" to turn the function on or off.
Press the Home key to return to the home screen.