"If the user grants a permission, the system gives the app all permissions that the app manifest lists for that functional area." It's unclear from the site if

"If the user grants a permission, the system gives the app all permissions that the app manifest lists for that functional area." It's unclear from the site if "functional area" == "permission group". But it appears to be case, as it's just like the Play Store handles permissions. This would mean that Apps requesting the RECEIVE_SMS permission, while also be able to read existing SMS messages.