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OPPO A54s
Android 11.0
1 Find "Carrier"
Slide two fingers downwards starting from the top of the screen.
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Press the settings icon.
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Press SIM card & mobile data.
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Press the required SIM.
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Press Carrier.
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2 Select network manually
Press the indicator next to "Auto-select".
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Press Off.
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Press Off to turn off the function and wait while your phone searches for networks.
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Press the required network.
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3 Select network automatically
Press the indicator next to "Auto-select" to turn on the function.
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4 Return to the home screen
Press the Home key to return to the home screen.
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