Hi guys, I'm posting this here because I am running iOS 8 (beta 5) but I always had this issue. What do I need to do to get my contact on my iPhone "talking" to Facebook to get profile pictures, birthdate, etc. it only works by itself with a few of my contacts and I don't know why. I have no idea on how to get all my contact that have a Facebook account to get them synced together. Thanks folks!