1. Find "Addititional settings"
Press the phone icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-efed1f55-4489-4f5d-9516-8655da24d6b0.png?width=198&height=396)
Press the menu icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-d1d45bed-070e-4a11-b96f-4c4a221c13b2.png?width=198&height=396)
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-c6149eb0-d7a5-4655-afe1-b4f740e9bb68.png?width=198&height=396)
Press Call settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-1d2fc73f-5888-407d-975a-6b3987ec728a.png?width=198&height=396)
Press the name of the SIM.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-847aff80-735b-44bc-9ab0-f34c10733b36.png?width=198&height=396)
Press Addititional settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-67d2f62c-1cea-46b0-9d42-81b79c2eaded.png?width=198&height=396)
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-871325c4-edd4-4409-bc20-66a0b2e96c2c.png?width=198&height=396)
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-871325c4-edd4-4409-bc20-66a0b2e96c2c.png?width=198&height=396)