1. Find "SIM manager"
Slide two fingers downwards starting from the top of the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7210823-f-7b615281-013b-4b30-807d-70d15fc217a7.png?width=214&height=458)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7210823-f-1be6eac2-abf7-4cce-ad40-b571105fe496.png?width=214&height=458)
Press Connections.
![](http://wmstatic.global.ssl.fastly.net/ml/7210823-f-83b1dcd5-cc9b-4231-801e-0e22856bbd6a.png?width=214&height=458)
Press SIM manager.
![](http://wmstatic.global.ssl.fastly.net/ml/7210823-f-6be9db4f-c4ee-4396-9445-64ca096156ad.png?width=214&height=458)
2. Turn use of SIM on or off
Press the required SIM.
![](http://wmstatic.global.ssl.fastly.net/ml/7210823-f-e6c86a6b-e42c-4e39-9318-5d3c08434bbd.png?width=214&height=458)
Press the indicator to turn use of the SIM on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7210823-f-7641bf3e-ac49-4cf4-b1e4-2ced21891845.png?width=214&height=458)
If you turn on use of the SIM, press Turn on.
![](http://wmstatic.global.ssl.fastly.net/ml/7210823-f-37b3e0d3-7fae-4dad-a2aa-7110c0f86741.png?width=214&height=458)
If you turn off use of the SIM, press Turn off.
![](http://wmstatic.global.ssl.fastly.net/ml/7210823-f-c174cee7-5be0-43f4-956a-fb64cedc9bcf.png?width=214&height=458)
Press the Return key.
![](http://wmstatic.global.ssl.fastly.net/ml/7210823-f-7641bf3e-ac49-4cf4-b1e4-2ced21891845.png?width=214&height=458)
3. Select default SIM for voice calls
Press Calls.
![](http://wmstatic.global.ssl.fastly.net/ml/7210823-f-e6c86a6b-e42c-4e39-9318-5d3c08434bbd.png?width=214&height=458)
Press the required setting.
![](http://wmstatic.global.ssl.fastly.net/ml/7210823-f-0e296bc3-8327-4f49-b2d5-6230c41373c1.png?width=214&height=458)
4. Select default SIM for text messaging
Press Messages.
![](http://wmstatic.global.ssl.fastly.net/ml/7210823-f-e6c86a6b-e42c-4e39-9318-5d3c08434bbd.png?width=214&height=458)
Press the required SIM.
![](http://wmstatic.global.ssl.fastly.net/ml/7210823-f-dd434211-64d5-4c86-bf8c-ad77dd9a3642.png?width=214&height=458)
5. Select default SIM for mobile data
Press Mobile data.
![](http://wmstatic.global.ssl.fastly.net/ml/7210823-f-e6c86a6b-e42c-4e39-9318-5d3c08434bbd.png?width=214&height=458)
Press the required setting.
![](http://wmstatic.global.ssl.fastly.net/ml/7210823-f-baeae638-c699-4606-9c3e-4f233b00b3aa.png?width=214&height=458)
6. Return to the home screen
Press the Home key to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7210823-f-e6c86a6b-e42c-4e39-9318-5d3c08434bbd.png?width=214&height=458)