1. Find "Additional settings"
Press the phone icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-b79d3af0-4c93-471e-9a87-1521f07e71b7.png?width=200&height=444)
Press the menu icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-d61ae10d-5d80-40f6-996e-9feb79aedfeb.png?width=200&height=444)
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-8a7e0609-956d-47cf-9130-661b1c7272f8.png?width=200&height=444)
Press Calling accounts.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-ef6514e4-8762-46fa-b310-73b9cad17cb7.png?width=200&height=444)
Press Advanced settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-65021703-b094-4340-99da-5b001c06edf8.png?width=200&height=444)
Press Additional settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-661204b1-7174-4b30-bb4e-95feb9c64e65.png?width=200&height=444)
2. Turn call waiting on or off
Press the required SIM.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-cc90ecd5-9071-455d-b5ce-bc2324f35452.png?width=200&height=444)
Press the indicator next to "Call Waiting" to turn the function on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-3a02ae11-9523-4c4c-8502-6c0b78602af7.png?width=200&height=444)
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-3a02ae11-9523-4c4c-8502-6c0b78602af7.png?width=200&height=444)