Re:Beware of ads that use inaudible sound to link your phone...
by what_ever on Friday November 13, 2015 @07:32PM
(#10563579)
I know you are giving Facebook as just an example but they have updated their app. If any well known app company continues to do this you can assume they are avoiding/delaying the API update to get more of your data and you should stop using them if you can.
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.