As of Android version 6.0, you can now finally control the permissions of apps with on-board resources, and not only see them once during the installation.
To view and control the permissions of applications, first call the application manager:
“Settings” – “Applications” – “Application Manager“.
There you will find all installed apps that you can now select separately. In the submenu of the respective app, the most important data (such as energy consumption, data usage, etc.) is displayed.
Here you select the item “Permissions”, and you can activate or deactivate these.
See picture: (click to enlarge)
Of course, you have the option to turn on or off all permissions as you like, but you may have to reckon with a reduced range of functions right through to inability to function.
Here we simply recommend to check the permissions according to the exclusion principle, and then simply undo the steps.