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OPPO A54s
Android 11.0
1. Find "Ringtone"
Slide two fingers downwards starting from the top of the screen.
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Press the settings icon.
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Press Sound & vibration.
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Press Ringtone.
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2. Select ring tone
Press the required SIM.
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Press Select from files.
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Press the required ring tones to hear them.
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Once you've found a ring tone you like, press the Return key.
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3. Return to the home screen
Press the Home key to return to the home screen.
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