When we dial a phone number using the dial pad of the phone app on the OnePlus smartphone, we receive an audible signal or feedback for each digit entered to confirm the entry.

Many smartphone users find the dial keypad tones annoying and immediately disable them, which also works anytime on the OnePlus device.

Android 10 | OxygenOS 10.0
Step 1:  Open the  Settings
Step 2:  Tap on  Sounds & vibration
Step 3:  Tap on  System sounds
Step 4:  Enable or disable  Dial pad tones
  1. Open the Settings
  2. Tap on Sounds & vibration
  3. Tap on System sounds
  4. Enable or disable Dial pad tones

OnePlus Instructions