1. Find "Additional settings"
Press the phone icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-473f09b5-aa42-42e4-891d-23d0c20b945b.png?width=184&height=428)
Press the menu icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-cd736608-c6f2-4259-9e4a-5801a2dd8109.png?width=184&height=428)
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-88ec5ff3-f660-4ef5-a37f-158fd40b9de1.png?width=184&height=428)
Press Calling accounts.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-b4c79121-1eb5-499f-a023-0acadb5e58bd.png?width=184&height=428)
Press the name of the SIM.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-1421f515-3fb4-4e5b-99cc-47ac76679ee5.png?width=184&height=428)
Press Additional settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-89c96636-6288-4cf2-932d-219a94dc372f.png?width=184&height=428)
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-04ee6b4e-699f-4c9a-83b0-1e637066a057.png?width=184&height=428)
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-04ee6b4e-699f-4c9a-83b0-1e637066a057.png?width=184&height=428)