When you’re deciding which iPhone to buy, your decision will be driven primarily by what size screen you want. The iPhone 5c (sadly relegated to one capacity, 8GB) and 5s have a 4-inch screens, while the 6 and 6 Plus have 4.7-inch and 5.5-inch screens, respectively; think about how they fit into your life – literally.
There are other differences; the 6 Plus’s camera has an image-stabilising lens, and both 6 models are faster.
Rumours began to circulate in May that Apple will announce the next iPhone in August, a month earlier in the year than usual. So, if you’re coming up to the end of your contract, you might want to hold off a few more months. At its developer conference in June, Apple announced that iOS 9 will focus on performance, and that it will continue to run on the iPhone 4S, which is already the oldest model supported by iOS 8.