Using the Permissions Manager on the OnePlus smartphone, we can see exactly which app has permission to access a particular function.

If a function of the OnePlus device is selected, it is immediately obvious which apps have access and these can be rejected or allowed again in any case.

Android 10 (OxygenOS 10.0)
Step 1:  Open the  Settings
Step 2:  Tap on  Apps & notifications
Step 3:  Tap on  App permissions
Step 4:  Choose an  option
Step 5:  Choose an  app
Step 6:  Choose  Allow  or  Deny
  1. Open the Settings
  2. Tap on Apps & notifications
  3. Tap on App permissions
  4. Choose an option
  5. Choose an app
  6. Choose Allow or Deny

OnePlus Instructions