1. Find "Additional settings"
Press the phone icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-829520a6-85af-4af4-8a29-1ba00b3d2297.png?width=198&height=440)
Press the menu icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-d9430b1b-cc26-45bc-a01a-48588ff55792.png?width=198&height=440)
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-27624a7f-5d9c-49ab-93c9-40b8d328576a.png?width=198&height=440)
Press Calling accounts.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-93cc904b-2164-4fea-b02b-1e1c13e2bbf0.png?width=198&height=440)
Press the required SIM.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-818d05e9-3ef9-49b9-8355-bd039c51530c.png?width=198&height=440)
Press Additional settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-91b10afc-4ce4-4f36-aa5a-c6a2a94990e8.png?width=198&height=440)
2. Turn call waiting on or off
Press the indicator next to "Call waiting" to turn the function on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-c0bb9e50-59dc-4cb9-bb25-24b42798f2b4.png?width=198&height=440)
3. Return to the home screen
Slide your finger upwards starting from the bottom of the screen to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-c0bb9e50-59dc-4cb9-bb25-24b42798f2b4.png?width=198&height=440)