I believe you are incorrect. iOS have introduced more and more permissions (most recently, for iOS10 a permission prompt appears for apps trying to access the b

I believe you are incorrect. iOS have introduced more and more permissions (most recently, for iOS10 a permission prompt appears for apps trying to access the built-in media library, whereas this was a silent free-for-all in earlier versions), and existing apps are not grandfathered in. According to at least https://www.macrumors.com/2012/06/14/apple-requires-user-permission-before-apps-can-access-personal-data-in-ios-6/ https://www.macrumors.com/2012/06/14/apple-requires-user-per... apps will just receive empty/dummy data until the permission is granted. From my personal experience, camera APIs return black pixels until the permission has been granted, even for apps that were released when iOS 5.0.0 was the latest version and never updated since.