OPPO A72
Android 10.0
Select help topic
1. Find "Additional Settings"
Press the phone icon.
Press the menu icon.
Press Settings.
Press Calling accounts.
Press Carrier Call Settings.
Press Additional Settings.
2. Turn your own caller identification on or off
Press the required SIM.
Press Owner's Number.
Press Show number to turn on caller identification.
Press Hide number to turn off caller identification.
3. Return to the home screen
Press the Home key to return to the home screen.