Apple iPhone 15 Pro Max
iOS 17
Select help topic
1 Find "Network Selection"
Press Settings.
Press Mobile Service.
Press Network Selection.
2 Select network
Press the indicator next to "Automatic" to turn automatic network selection on or off.
If you turn off the function, press the required network.
3 Return to the home screen
Slide your finger upwards starting from the bottom of the screen to return to the home screen.