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Huawei P30
Android 9.0
1 Find "Carrier"
Press Settings.
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Press Wireless & networks.
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Press Mobile network.
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Press Carrier.
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2 Select network automatically
If you want to select a network automatically, press the indicator next to "Automatic" to turn on the function.
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3 Select network manually
If you want to select a network manually, press the indicator next to "Automatic" to turn off the function.
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Press OK and your phone will search for networks.
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Press the required network.
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4 Return to the home screen
Slide your finger upwards starting from the bottom of the screen to return to the home screen.
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