Oppo
Change What the Volume Buttons Control auf Oppo
By default, Coloros links the physical volume rocker to media playback only. Pressing the buttons while browsing or watching a video changes that volume, but a ringing phone or an incoming notification sound stays untouched. This split behavior is intentional: it prevents accidental muting of calls while you adjust music or video volume, but it also means many users cannot silence a ringtone quickly with the buttons alone.
To link the volume rocker to ringtone volume instead, go to Tap on Settings ➔ Tap on Sound & vibration ➔ Tap on Volume button function ➔ Choose Media volume or Ringtone volume. Selecting Ringtone volume makes the rocker adjust the ring and notification level directly, without opening a separate slider first.
Keep media volume selected if you mostly need quick control while streaming audio or video, since switching back and forth is instant. If your main complaint is loud calls or notifications catching you off guard, ringtone volume is the better fit. Silent mode and Focus mode settings are separate from this option and still need their own toggles.