Oppo
Turn Dial Pad Tone On or Off auf Oppo
On Oppo phones running ColorOS, the dial pad stays silent by default when you tap digits to place a call. This is a system sound setting, not a bug and not related to muted media volume.
The option lives inside the general sound and haptics menu, separate from ringtone or notification volume. Turning it on adds a short tone for every digit you tap on the dial screen, which some people use to confirm each press without looking at the display.
To enable or disable it, go to Tap on Settings ➔ Tap on Sound & vibration ➔ Tap on More sounds & haptics ➔ Enable or disable Dial pad tone.
If the toggle is already on but you still hear nothing, check that media or system volume is not muted, since dial pad tone follows the general volume level. If your phone is silent everywhere, look at ring volume and Do Not Disturb settings instead of this option.
