1. Find "SIM card manager"
Slide your finger downwards starting from the top of the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-8a659b78-ec94-4757-baf0-0c9a92312e5c.png?width=202&height=418)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-aa45eaf9-c8c6-4bf7-9dc1-893c103af5ea.png?width=202&height=418)
Press Connections.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-d7a16ed1-1ddc-4eed-abff-fb76fd69b435.png?width=202&height=418)
Press SIM card manager.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-7fbc7176-cc0e-4049-ab12-a828d289d2ae.png?width=202&height=418)
2. Turn use of SIM on or off
Press the required SIM.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-6e0859d3-36cd-42ef-a88d-3bbf36086152.png?width=202&height=418)
Press the indicator to turn use of the SIM on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-48ae1bdf-804c-4267-9ded-ce9906003fd8.png?width=202&height=418)
Press the Return key.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-48ae1bdf-804c-4267-9ded-ce9906003fd8.png?width=202&height=418)
3. Select default SIM for voice calls
Press Calls.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-6e0859d3-36cd-42ef-a88d-3bbf36086152.png?width=202&height=418)
Press the required setting.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-e9630b76-0576-495b-bcd1-53ee3ae7a963.png?width=202&height=418)
4. Select default SIM for text messaging
Press Text messages.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-6e0859d3-36cd-42ef-a88d-3bbf36086152.png?width=202&height=418)
Press the required SIM.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-e1c60fb5-d20c-42be-92e5-2541ddd2f9c7.png?width=202&height=418)
5. Select default SIM for mobile data
Press Mobile data.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-6e0859d3-36cd-42ef-a88d-3bbf36086152.png?width=202&height=418)
Press the required setting.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-0f970bb8-fd19-4fe5-acda-1e9e2a6ecb7b.png?width=202&height=418)
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-6e0859d3-36cd-42ef-a88d-3bbf36086152.png?width=202&height=418)