Huawei P9 Plus

Find "Carrier"

Press Settings.

Find "Carrier"

Press More.

Find "Carrier"

Press Mobile network.

Find "Carrier"

Press Carrier.

Select network

If you want to select a network automatically, press Choose automatically to turn on the function.

Select network

If you want to select a network manually, press Choose automatically to turn off the function.

Select network

Press OK and your phone will search for networks.

Select network

Press the required network.

Return to the home screen

Press the Home key to return to the home screen.