Oppo
Turn Touch Sounds On or Off auf Oppo
Oppo phones running ColorOS play a short click sound whenever you tap the navigation buttons or certain on-screen elements. This is a separate audio feedback layer, independent from your ringtone, notification sound, or media volume.
Because it is tied to touch feedback rather than the general sound profile, muting your phone or switching to silent mode does not turn it off. You have to disable the option directly in the sound settings.
Where to turn it off
Open Settings ➔ Sound & vibration ➔ More sounds & haptics ➔ Touch sounds. Switch the toggle off to stop the click sound for taps, and back on if you want the feedback again.
This setting only affects the audible click on touch input. It does not change vibration feedback, keyboard sounds, or system notification tones, which are controlled by their own switches in the same sound menu.
If you still hear a sound after disabling this option, check whether your keyboard app has its own separate sound setting, since some keyboard apps play their own key-tap sound independent of the system setting.