In recent updates in the play store, it's needed to explain to the users why do you need the permissions that your app use, before you can use its functionality

So i created this simple project that creates a pop up that lists the permissions you declared.

Obviously, you need to declare them in the AndroidManifest file

Example when the app it's opened for the first time

Example when a permission is denied

Example when a permission was denied and the app is restarted

If you want to try it, heres the .apk file

You can checkout this documentation

https://developer.android.com/training/permissions/requesting

https://docs.unity3d.com/Manual/android-manifest.html

https://docs.unity3d.com/Manual/android-RequestingPermissions.html