1. Find "Additional settings"
Press the phone icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-09d44d7d-0a80-4228-968c-72450293b8bf.png?width=208&height=454)
Press the menu icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-e994a212-fc15-4066-8735-fb31f3f240a0.png?width=208&height=454)
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-96e760e9-2f8e-4d9c-8655-30ea8b6a7322.png?width=208&height=454)
Press Calling accounts.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-fa42cf1e-0e19-418f-a305-7025e592a63f.png?width=208&height=454)
Press the name of the SIM.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-d288c592-6c7a-4710-8850-63f4072e33da.png?width=208&height=454)
Press Additional settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-da67590a-2dc6-4ae4-bc81-6e1a18e686be.png?width=208&height=454)
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-406a4732-1908-4755-b0f0-9dcde9183e5d.png?width=208&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/7140723-f-406a4732-1908-4755-b0f0-9dcde9183e5d.png?width=208&height=454)