Our verdict

So should you upgrade? Yes, for the thinness and lightness alone. But the additional features are pretty nice, especially 4G. And Apple promises that battery life has actually gone up, not down (though they have squeezed in a much bigger cell). Many of the improvements will work on existing phones thanks to the iOS 6 software, but the faster processor will make everything work better and quicker here. There are new, improved headphones, the panorama shot effect looks good and neat extras like swiping down the screen to refresh the email list are all good to have on this bigger screen. Try one in your hand - we think you'll like it.