Samsung Galaxy S8 / S8+ - Turn App Permissions On / Off
App permissions give you the ability to customize and control which capabilities you give apps. You can pick and choose which permissions to grant apps at the time of use.
Downloaded apps designed for Android 6.0 (Marshmallow) and up only ask for permission the first time you use a feature rather than asking for permissions out of context.
Turning off certain permissions may result in basic features no longer working as intended.
To turn permissions on or off for installed apps:
From a Home screen, touch and swipe up or down to display all apps.
These instructions apply to Standard mode only.
From a Home screen, navigate: Settings > Apps .
Ensure All apps is selected (upper-left).
If necessary, tap the Dropdown icon (upper-right) then select All apps
Locate then select the appropriate app.
If system apps aren't visible, tap the Menu icon (upper-right) > Show system apps.
If available, tap Permissions (App settings section).
Tap any of the available permissions (e.g., Camera, Contacts, Location, etc.) to turn on or off .
If turning off a permission, from the "If you deny this permission..." prompt, select Cancel or Deny.
The image below is merely an example.