![OPPO A72](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-a84b7dd2-fee1-4d44-8e6b-3d456654fb19.png?width=150&height=320)
OPPO A72
Android 10.0
1. Find "Additional Settings"
Press the phone icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-facf3558-7b28-4c5f-88a4-667a7893c56e.png?width=202&height=448)
Press the menu icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-45f8a2c1-54e9-4c6c-97d7-37b6b8e03109.png?width=202&height=448)
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-2950ccd0-d3cf-4987-9ea7-4f5f4de29e5a.png?width=202&height=448)
Press Calling accounts.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-8d345ee7-ede0-4cd0-812d-dd3429691600.png?width=202&height=448)
Press Carrier Call Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-a3396edf-aad3-4309-8a6e-e1c63da304e0.png?width=202&height=448)
Press Additional Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-11956d57-66b8-46a6-a733-4b1fb13a0acc.png?width=202&height=448)
2. Turn call waiting on or off
Press the required SIM.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-32c54851-3e83-405c-9896-cc686e21a149.png?width=202&height=448)
Press the indicator next to "Call Waiting" to turn the function on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-d11e78d2-604a-414f-9d40-0c4318d09bb5.png?width=202&height=448)
3. Return to the home screen
Press the Home key to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-d11e78d2-604a-414f-9d40-0c4318d09bb5.png?width=202&height=448)