When revoking permissions from older applications, you’ll see a warning message saying, “This app was designed for an older version of Android. Denying permissi

When revoking permissions from older applications, you’ll see a warning message saying, “This app was designed for an older version of Android. Denying permission may cause it to no longer function as intended." Older applications weren’t designed for this feature, and they generally just assume they have access to any permissions they request. Most of the time, applications should just continue working normally if you revoke their permissions. In some rare cases, the application may crash — if it does, you’ll need to give it permission again. So yeah, if Facebook decides to stick to api level 22 for a while, you won't be able to un-privilege it.