Samsung Galaxy Note10
Android 9.0
1 Find "Network operators"
Slide two fingers downwards starting from the top of the screen.
Press the settings icon.
Press Connections.
Press Mobile networks.
Press Network operators.
2 Select network
Press the required SIM.
If you want to select a network manually, press Select manually and wait while your phone searches for networks.
Press the required network.
If you want to select a network automatically, press Select automatically.
3 Return to the home screen
Press the Home key to return to the home screen.