![OPPO Reno8 5G](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-9859e30e-a06f-4158-8d33-a880a70d5d6a.png?width=150&height=320)
OPPO Reno8 5G
Android 12.0
1. Find "Mobile network"
Slide two fingers downwards starting from the top of the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-3d14977b-98fa-4d41-9f3e-1771b1971adf.png?width=200&height=448)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-3f021327-8552-4d2a-8847-4384e7518eef.png?width=200&height=448)
Press Mobile network.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-376d3a56-667d-423f-b8d7-8c4ef26d420f.png?width=200&height=448)
2. Turn use of SIM on or off
Press the required SIM.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-7e4e700d-a449-44e1-a415-3dceb18e0d63.png?width=200&height=448)
Press the indicator next to "Enable" to turn use of the SIM on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-4ec4418b-e97a-4aaf-b69a-2098b17a4eba.png?width=200&height=448)
Press the Return key.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-4ec4418b-e97a-4aaf-b69a-2098b17a4eba.png?width=200&height=448)
3. Select default SIM for voice calls
Press Calling.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-7e4e700d-a449-44e1-a415-3dceb18e0d63.png?width=200&height=448)
Press the required setting.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-f9fa2f65-2de8-4ad3-9243-a0e7857e590f.png?width=200&height=448)
4. Select default SIM for mobile data
Press Internet.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-7e4e700d-a449-44e1-a415-3dceb18e0d63.png?width=200&height=448)
Press the required SIM.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-854e6e59-5046-47ba-ada1-0417fbecec6a.png?width=200&height=448)
5. Return to the home screen
Press the Home key to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-7e4e700d-a449-44e1-a415-3dceb18e0d63.png?width=200&height=448)