FriendSync (Visual Caller ID) displays your friend’s Facebook profile pictures when they call on your iPhone. It will match your contacts on your iPhone with your friends in Facebook automatically, and any ones that are missed can be matched manually. FriendSync saves your preferences, so updating your friend’s pictures only takes a single tap on your iPhone.
This 3rd Party App is available at the Apple iTunes AppStore. Browse the full list of all AppStore apps filed under the AppStore category.