1. Find "SIM card manager"
Slide two fingers downwards starting from the top of the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-59abd2ad-7ceb-43b5-b7c1-87ecc0ae5ea2.png?width=198&height=440)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-2bee53c4-0a07-415a-b909-093bba87ce28.png?width=198&height=440)
Press Connections.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-f75f18e9-950b-44a7-a44f-30ae9562ee10.png?width=198&height=440)
Press SIM card manager.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-f583afca-42a4-495c-abb7-1610f192388a.png?width=198&height=440)
2. Turn use of SIM on or off
Press the indicator next to the required SIM to turn use of the SIM on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-435554af-f1ba-4e5c-a71c-76ce87f55216.png?width=198&height=440)
Press OK.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-14109ee8-20fd-4984-9541-b9aca21c76e5.png?width=198&height=440)
3. Select default SIM for voice calls
Press Calls.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-435554af-f1ba-4e5c-a71c-76ce87f55216.png?width=198&height=440)
Press the required SIM.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-2ff26a1b-01a4-484c-8a5d-4c405d14add8.png?width=198&height=440)
4. Select default SIM for text messaging
Press Messages.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-435554af-f1ba-4e5c-a71c-76ce87f55216.png?width=198&height=440)
Press the required SIM.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-ab4de51a-89ee-48b6-aa3a-483d2636769e.png?width=198&height=440)
5. Select default SIM for mobile data
Press Mobile data.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-435554af-f1ba-4e5c-a71c-76ce87f55216.png?width=198&height=440)
Press the required setting.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-af57b565-ecb4-4857-905e-f6d311f6a347.png?width=198&height=440)
6. Return to the home screen
Press the Home key to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-435554af-f1ba-4e5c-a71c-76ce87f55216.png?width=198&height=440)