![OPPO Find X3 Pro](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-aaadb65a-2736-4e81-b398-c1073e9ef4f9.png?width=150&height=320)
OPPO Find X3 Pro
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-fd5837f8-3cf0-4ce2-a360-c5be28b802f4.png?width=204&height=454)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-b85f0820-be0f-4489-8896-135579f79d09.png?width=204&height=454)
Press SIM card & mobile data.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-d81d8e52-a930-41da-986e-f1c352d7a1c5.png?width=204&height=454)
2. Turn use of SIM on or off
Press the required SIM.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-ccd7c365-ec15-4a62-bf02-6e68e74e1a46.png?width=204&height=454)
Press the indicator next to "Enable" to turn use of the SIM on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-4754a356-b816-457e-a196-38ed8b28b0f7.png?width=204&height=454)
Press the Return key.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-4754a356-b816-457e-a196-38ed8b28b0f7.png?width=204&height=454)
3. Select default SIM for voice calls
Press Calling.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-9d5f3a71-baa0-4514-8089-3dfec66392ce.png?width=204&height=454)
Press the required setting.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-ee3d2bd9-185d-4d08-9294-5791ff19d26e.png?width=204&height=454)
Press the Return key.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-ee3d2bd9-185d-4d08-9294-5791ff19d26e.png?width=204&height=454)
4. Select default SIM for mobile data
Press Mobile data.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-9d5f3a71-baa0-4514-8089-3dfec66392ce.png?width=204&height=454)
Press the required SIM.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-7ff9e9d6-fcf7-4381-95bb-97c3ade07b89.png?width=204&height=454)
If you change SIM, press Switch.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-a4ee35d8-53f9-4d52-9743-abad315c8a2e.png?width=204&height=454)
Press the Return key.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-7ff9e9d6-fcf7-4381-95bb-97c3ade07b89.png?width=204&height=454)
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-ccd7c365-ec15-4a62-bf02-6e68e74e1a46.png?width=204&height=454)