![OPPO Find X3 Neo](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-156f8620-844a-45d9-b2c9-ec2f2bb509fa.png?width=150&height=320)
OPPO Find X3 Neo
Android 11.0
1. Find "SIM card & mobile data"
Slide two fingers downwards starting from the top of the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-acb900cb-c71b-434e-b377-bc12beb8439e.png?width=204&height=452)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-6d00cb5d-f28d-4a22-ab01-6496df063818.png?width=204&height=452)
Press SIM card & mobile data.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-a0107308-8533-4212-9539-ef0a99e9cc42.png?width=204&height=452)
2. Turn use of SIM on or off
Press the required SIM.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-b1a6802b-f8fc-406e-9157-58a10bca33e6.png?width=204&height=452)
Press the indicator below "SIM Info & Settings" to turn use of the SIM on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-9bd3b382-b2af-4ab0-a9d5-3de7a4fffb51.png?width=204&height=452)
Press the Return key.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-9bd3b382-b2af-4ab0-a9d5-3de7a4fffb51.png?width=204&height=452)
3. Select default SIM for voice calls
Press Calling.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-b1a6802b-f8fc-406e-9157-58a10bca33e6.png?width=204&height=452)
Press the required setting.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-a3e169e4-57e4-4f41-b189-2e710bcb862a.png?width=204&height=452)
Press the Return key.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-a3e169e4-57e4-4f41-b189-2e710bcb862a.png?width=204&height=452)
4. Select default SIM for mobile data
Press Mobile data.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-b1a6802b-f8fc-406e-9157-58a10bca33e6.png?width=204&height=452)
Press the required SIM.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-50f60625-3e5a-4b50-bc1c-e4fceb9fd757.png?width=204&height=452)
If you change SIM, press Switch.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-d12bdfee-8778-406f-b7bd-fe46af196d1d.png?width=204&height=452)
Press the Return key.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-50f60625-3e5a-4b50-bc1c-e4fceb9fd757.png?width=204&height=452)
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-b1a6802b-f8fc-406e-9157-58a10bca33e6.png?width=204&height=452)