If we take a screenshot or a capture of the screen on the OnePlus smartphone, by default, a sound will be heard to inform us about the single frame recording that has been made.

If desired, the screenshot sound can be (de)activated at any time if the acoustic feedback is perceived as disturbing.

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  Screenshot sound
  1. Open the Settings
  2. Tap on Sounds & vibration
  3. Tap on System sounds
  4. Enable or disable Screenshot sound

OnePlus Instructions