Samsung Galaxy S20 Ultra 5G

Slide two fingers downwards starting from the top of the screen.

Press the settings icon.

Press Connections.

Press Mobile networks.

Press Network mode.

Press the required network mode.

There may be different network modes available depending on where you are. If you set your phone to the fastest network mode, it will always find the network with the highest data speed and best signal.

Press the Home key to return to the home screen.