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Your deviceOPPO A3 5G
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Open Settings

Open Settings and use the search box to search for Do Not Disturb.

Device-matched visualOPPO A3 5G · OPPO ColorOS
9:41
OPPO ColorOSSettings
Search settings
Sound & vibration
Notifications
A carefully recreated OPPO ColorOS screen for OPPO A3 5G, based on the manufacturer's current guidance. The highlighted control shows exactly what to use next. A software update may move it slightly.