![OPPO A72](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-a84b7dd2-fee1-4d44-8e6b-3d456654fb19.png?width=150&height=320)
OPPO A72
Android 10.0
1. Find "SIM Card & Mobile Data"
Slide your finger downwards starting from the top of the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-facf3558-7b28-4c5f-88a4-667a7893c56e.png?width=202&height=448)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-4046c4ee-029f-4a97-84b5-3fb11213af3f.png?width=202&height=448)
Press SIM Card & Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-3c5dd9d4-564f-4036-9598-5fd2ddf70e18.png?width=202&height=448)
2. Turn use of SIM on or off
Press the required SIM.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-4ab1b90f-ccf2-4ae4-8e86-ea094e42c7cd.png?width=202&height=448)
Press the indicator to turn use of the SIM on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-011524d0-e07d-4643-a975-51c86e810981.png?width=202&height=448)
Press the Return key.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-011524d0-e07d-4643-a975-51c86e810981.png?width=202&height=448)
3. Select default SIM for voice calls
Press Calling.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-4ab1b90f-ccf2-4ae4-8e86-ea094e42c7cd.png?width=202&height=448)
Press the required setting.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-c7c99038-2ad7-4214-9380-8cd2357e4763.png?width=202&height=448)
4. Select default SIM for mobile data
Press Mobile Data.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-4ab1b90f-ccf2-4ae4-8e86-ea094e42c7cd.png?width=202&height=448)
Press the required SIM.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-fcade270-a08c-4e9b-b04d-37e486adc85e.png?width=202&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-4ab1b90f-ccf2-4ae4-8e86-ea094e42c7cd.png?width=202&height=448)