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OPPO A38
Android 13
1 Find "Number"
Press the call icon.
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Press the menu icon.
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Press Settings.
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Press Voicemail.
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Press Advanced Settings.
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Press Number.
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2 Save voicemail number
Key in 707 and press the confirm icon.
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707
3 Return to the home screen
Press the Home key to return to the home screen.
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