Deciding which iPhone to buy has always been tricky. Which screen size is best for you, and how much storage do you need? Should you save money by selecting an older model, or should you splash out on the latest iPhone? Which iPhone is the best compromise between specs and value for money? In this article we talk you through each of the phones currently available from Apple, to help you decide which is best for you. We discuss price, specs and features, and you should leave feeling much more confident about your buying decision. What iPhones does Apple sell?Apple introduced four new phones in …