![Samsung Galaxy A51](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-b4bf2131-9672-4038-b87c-726bcc08be37.png?width=150&height=320)
Samsung Galaxy A51
Android 10.0
1. Find "Supplementary services"
Press the phone icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-ba8fe847-7002-4336-9120-a2616927c3ca.png?width=204&height=454)
Press the menu icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-7c20d3d3-55a4-4999-86df-8f977fd34889.png?width=204&height=454)
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-a48e68e8-f348-433b-96ce-4b1ba926f0f2.png?width=204&height=454)
Press Supplementary services.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-ddd599f6-60a8-4cb1-940b-4f55236b4da7.png?width=204&height=454)
2. Turn call waiting on or off
Press the indicator next to "Call waiting" below the required SIM to turn the function on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-169e5e71-6463-4873-bdfc-ab6e490ad4bd.png?width=204&height=454)
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-169e5e71-6463-4873-bdfc-ab6e490ad4bd.png?width=204&height=454)