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-e0948856-ff8f-4c3a-895a-6acad742554d.png?width=216&height=456)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-4676d3ae-b6f2-46e5-8a3a-7cb3426bd6a0.png?width=216&height=456)
Press Connections.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-fbbff45e-ce4e-49ac-886c-1d98d4da1cca.png?width=216&height=456)
Press SIM card manager.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-64c4a9b1-ab8f-4348-bf3f-ba6cffd0fd97.png?width=216&height=456)
2. Turn use of SIM on or off
Press the required SIM.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-73336ef4-f9d4-489a-8f6a-1b8614074c03.png?width=216&height=456)
Press the indicator to turn use of the SIM on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-7102ba8a-84db-4899-a075-7c7f64f7c209.png?width=216&height=456)
Press the Return key.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-7102ba8a-84db-4899-a075-7c7f64f7c209.png?width=216&height=456)
3. Select default SIM for voice calls
Press Calls.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-73336ef4-f9d4-489a-8f6a-1b8614074c03.png?width=216&height=456)
Press the required setting.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-907828cd-3f83-48b3-8a88-4bbed2cd65fa.png?width=216&height=456)
4. Select default SIM for text messaging
Press Text messages.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-73336ef4-f9d4-489a-8f6a-1b8614074c03.png?width=216&height=456)
Press the required SIM.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-3e1ca4de-d09e-4be5-a2c8-60f71b493bde.png?width=216&height=456)
5. Select default SIM for mobile data
Press Mobile data.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-73336ef4-f9d4-489a-8f6a-1b8614074c03.png?width=216&height=456)
Press the required setting.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-c82d5227-53f0-4490-9e4e-db70b56d0cd5.png?width=216&height=456)
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-73336ef4-f9d4-489a-8f6a-1b8614074c03.png?width=216&height=456)