Motorola Edge 20 Pro 5G
Android 12.0
1. Find "SIM cards"
Slide two fingers downwards starting from the top of the screen.
Press the settings icon.
Press Network & Internet.
Press SIM cards.
2. Turn use of SIM on or off
Press the indicator next to the required SIM to turn use of the SIM on or off.
3. Select default SIM for mobile data
Press Data.
Press the required SIM.
If you select the SIM, which isn't the default SIM for mobile data, press OK.
Press the Return key.
4. Select default SIM for text messaging
Press SMS.
Press the required SIM.
5. Select default SIM for voice calls
Press Preferred SIM for unknown number.
Press the required setting.
6. Return to the home screen
Press the Home key to return to the home screen.