I've noticed how my iPhone 4 has started to become slow over the years. This is most likely also due to iOS 7 etc., but since it's a flash drive, I believe if I would install a new one, it would become considerably faster. Can you buy and upgrade these yourself? I've tried to search for iPhone 4 flash drives but there's only random stuff coming up. All I know is that you need special screws to open the iPhone. And it's out of warranty anyway. ---------- Nevermind, found articles saying you can't. Had to search for hard drive, not flash drive. Even though it's a flash drive. Too bad!