My idea? FB app stores data locally, uses this local data to pull ads onto your phone to be served/rendered. Don't need to send user data out. Just identify the

My idea? FB app stores data locally, uses this local data to pull ads onto your phone to be served/rendered. Don't need to send user data out. Just identify the ads this phone should be targeted by and render them as needed. Good point about the scanning, though. These scumbags certainly would try to pull something like that off.