Xiaomi Poco F3
Android 12.0
Select help topic
1. Find "Advanced settings"
Slide two fingers downwards starting from the top of the screen.
Press the settings icon.
Press SIM cards & mobile networks.
Press Advanced settings.
2. Turn data roaming on or off
Press Data roaming.
Press the drop down list next to "International roaming".
Press the required setting to turn the function on or off.
3. Return to the home screen
Press the Home key to return to the home screen.