OPPO Reno4 Pro 5G
1. Find "Additional Settings"
Press the phone icon.
1. Find "Additional Settings"
Press the menu icon.
1. Find "Additional Settings"
Press Settings.
1. Find "Additional Settings"
Press Calling accounts.
1. Find "Additional Settings"
Press Carrier Call Settings.
1. Find "Additional Settings"
Press Additional Settings.
2. Turn call waiting on or off
Press the required SIM.
2. Turn call waiting on or off
Press the indicator next to "Call Waiting" to turn the function on or off.
3. Return to the home screen
Press the Home key to return to the home screen.
1. Find "Additional Settings"
2. Turn call waiting on or off
3. Return to the home screen