1. Find "SIM cards & mobile networks"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-284f0f54-3525-4fc7-b579-5d69e2579915.png?width=204&height=408)
Press SIM cards & mobile networks.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-d575ec2b-821a-4075-99d1-8f542a695804.png?width=204&height=408)
2. Turn use of SIM on or off
Press the required SIM.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-53827e61-8745-4d95-93d0-9a1c361d2c94.png?width=204&height=408)
Press the indicator next to "Turn on" to turn use of the SIM on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-53092afe-c757-4a8b-9820-839ea2b4cc30.png?width=204&height=408)
If you turn off use of the SIM, press OK.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-fbc79fc8-b815-443d-8549-a17e5c1f366d.png?width=204&height=408)
Press the Return key.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-53092afe-c757-4a8b-9820-839ea2b4cc30.png?width=204&height=408)
3. Select default SIM for calls
Press Dial.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-53827e61-8745-4d95-93d0-9a1c361d2c94.png?width=204&height=408)
Press the required setting.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-970dac93-391f-488e-b852-d798d9fce412.png?width=204&height=408)
4. Select default SIM for mobile data
Press Internet.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-ce9747fd-7646-4d44-99e9-01eb4a09f6a9.png?width=204&height=408)
Press the required SIM.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-a9925cc2-4e6b-4ea4-9c16-ba42e15899fc.png?width=204&height=408)
5. Return to the home screen
Press the Home key to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-ce9747fd-7646-4d44-99e9-01eb4a09f6a9.png?width=204&height=408)