![Samsung Galaxy A12](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-fd609ca4-0061-4ae4-b485-a797860dd513.png?width=150&height=320)
Samsung Galaxy A12
Android 10.0
1. Find "SIM card manager"
Slide two fingers downwards starting from the top of the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-57c6043a-b9e4-4e32-9587-52130c062072.png?width=198&height=444)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-82d999c2-5484-4a11-b35e-f182512a9e1e.png?width=198&height=444)
Press Connections.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-aea3d2c5-f3b4-48d4-a82c-f81789d7f652.png?width=198&height=444)
Press SIM card manager.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-76bbcfaa-4e91-4d7d-abc3-2fe347cc3ed9.png?width=198&height=444)
2. Turn use of SIM on or off
Press the required SIM.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-70793864-032e-4da4-aba8-add0daf40034.png?width=198&height=444)
Press the indicator to turn use of the SIM on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-2fc093cd-e186-419a-9428-9f6632c2a878.png?width=198&height=444)
Press the Return key.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-2fc093cd-e186-419a-9428-9f6632c2a878.png?width=198&height=444)
3. Select default SIM for voice calls
Press Calls.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-70793864-032e-4da4-aba8-add0daf40034.png?width=198&height=444)
Press the required setting.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-8a16afbb-ca3e-4001-b5d4-1c42cd72a7d6.png?width=198&height=444)
4. Select default SIM for text messaging
Press Text messages.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-70793864-032e-4da4-aba8-add0daf40034.png?width=198&height=444)
Press the required SIM.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-7adb088a-5972-4931-9944-e7ca325a0589.png?width=198&height=444)
5. Select default SIM for mobile data
Press Mobile data.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-70793864-032e-4da4-aba8-add0daf40034.png?width=198&height=444)
Press the required setting.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-3e9249e0-e7ba-4835-990c-1ac1a2293ca8.png?width=198&height=444)
6. Return to the home screen
Press the Home key to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-70793864-032e-4da4-aba8-add0daf40034.png?width=198&height=444)