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, navigate: Apps icon > Settings > Apps (Device section).
Ensure All apps is selected at the top.
If necessary, tap the Dropdown icon (upper-right) then select All apps.
Locate then tap the app name (e.g., Cloud).
If system apps aren't visible, tap the Menu icon (upper-right) > Show system.
If available, tap Permissions.
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 an example.