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-cb77762e-fe16-40a2-8291-1e4764721890.png?width=198&height=440)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-29a4ea3f-9947-4333-8a95-13a3cc7e0d5e.png?width=198&height=440)
Press Connections.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-2bffbc47-70c0-4ba8-9682-85896bfa642f.png?width=198&height=440)
Press SIM card manager.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-bd5a67fa-7334-43af-9211-3d8894da8834.png?width=198&height=440)
2. Turn use of SIM on or off
Press the indicator next to the required SIM.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-03e576bd-73ba-407e-b234-8e62c11cee54.png?width=198&height=440)
Press OK to turn use of the SIM on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-4ccf9437-2602-4e89-ba97-f320d9287348.png?width=198&height=440)
3. Select default SIM for voice calls
Press Calls.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-03e576bd-73ba-407e-b234-8e62c11cee54.png?width=198&height=440)
Press the required setting.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-8f30f49c-8c38-4281-bced-66ca3fc39fa1.png?width=198&height=440)
4. Select default SIM for text messaging
Press Messages.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-03e576bd-73ba-407e-b234-8e62c11cee54.png?width=198&height=440)
Press the required SIM.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-6f5da457-4d4a-48a9-b3ed-a95d59f68af9.png?width=198&height=440)
5. Select default SIM for mobile data
Press Mobile data.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-03e576bd-73ba-407e-b234-8e62c11cee54.png?width=198&height=440)
Press the required setting.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-614f7839-e85b-4a4d-898c-f0f7698f3f6f.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-03e576bd-73ba-407e-b234-8e62c11cee54.png?width=198&height=440)