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The iPhone 6 goes on sale on September 19th – will you be upgrading?Īlthough from the outside it looks like little has changed from 2014's iPhone 6, it's what's on the inside that counts. One of the more interesting additions is a number of new sensors to monitor users' health, fitness and sleep patterns, no doubt designed to partner up with iOS 8's new Health app. Meanwhile, the battery's had a bit of a boost, though it still lags behind comparable Android phones. The camera is still 8.0 MP too, although autofocus, noise reduction and image stabilisation have all undergone dramatic improvements.

The resolution is less than the 416 ppi that had been widely predicted, sticking with the same 326 ppi rating enjoyed by the iPhone 5S – so while it's a bigger screen, it won't be any sharper. Mirroring the most recent iPad designs, the iPhone 6 has curved edges, although the star of the show is surely the screen – nearly an inch bigger than its predecessor. The big announcement on September 9th finally gave us all our first look at the super-slim iPhone 6 - and what a handsome beast it is. Users were also given HD video recording with an all-new 5MP camera, as well as a second camera on the front to complement the new FaceTime app – which soon helped put the word "selfie" in the dictionary. This was powered by the Apple A4 chip and iOS4, which allowed users to multitask for the first time. The iPhone 4's obvious immediate change was its new high-resolution Retina display, making things look prettier than ever. It was a bold move in order to make the phone more attractive and simple, though left-handers around the world found themselves with signal problems linked to their dexterity.

Labelled the thinnest smartphone in the world on launch, the iPhone 4 was flat, with aluminosilicate glass forming the front and back while a stainless steel frame doubled up as its antenna.

After being leaked months ahead of its sale in June 2010, the iPhone 4's hype was matched by the huge changes it delivered hardware and software alike enjoyed major renovations and innovations.
