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OPPO A57 4G
Android 12.0
1. Find "Reset phone"
Slide two fingers downwards starting from the top of the screen.
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Press the settings icon.
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Press System settings.
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Press Back up and reset.
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Press Reset phone.
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2. Restore factory default settings
Press Erase all data.
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Press Erase data.
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Press Erase data. Wait a moment while the factory default settings are restored. Follow the instructions on the screen to set up your phone and prepare it for use.
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