![OPPO A57 4G](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-ccc1f389-7e5c-4ef2-86b2-dac3129e8544.png?width=150&height=320)
OPPO A57 4G
Android 12.0
1. Find "Call barring"
Press the phone icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-9a7d7d49-1709-4d0b-a490-fcda21ff950e.png?width=200&height=446)
Press the menu icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-a9aac45e-7970-451e-be6a-d40ab4116311.png?width=200&height=446)
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-309f902f-a0fa-435f-b67f-8e108b0fc885.png?width=200&height=446)
Press Calling accounts.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-11399575-88fb-4531-9bff-d90b38e7f797.png?width=200&height=446)
Press Advanced settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-e57667a5-82ff-4b88-87b6-d9047f70082e.png?width=200&height=446)
Press Call barring.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-004280e7-3d8d-45b8-9896-aaadb4e13202.png?width=200&height=446)
2. Turn call barring on or off
Press the required SIM.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-c9e213d8-90e1-48d7-8922-ce633cc8a160.png?width=200&height=446)
Press the indicator next to the required barring type to turn the function on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-aad22324-98d5-4a3f-befd-621f15cd7e02.png?width=200&height=446)
Key in your barring password. The default barring password is 1919.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-34e982a0-8e6a-4cb1-8eb3-e3d9566bbbc3.png?width=200&height=446)
1919
3. Return to the home screen
Press the Home key to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-aad22324-98d5-4a3f-befd-621f15cd7e02.png?width=200&height=446)