When Apple releases iOS 6, the iPhone 3GS and iPhone 4 will not be able to use the turn-by-turn and Map flyover features on the iPhone. The original iPad and the third generation iPod will not receive the update at all. Only A5 or A5x devices like the iPhone 4S, iPad 2, and iPad third generation will be able to new the new Flyover and turn-by-turn navigation features in iOS 6. Unfortunately the iPhone 4 will not be able to use FaceTime over cellular networks either. The iPhone 3GS will not work with shared Photo Streams, VIP, flagged e-mail, and offline reading list.