With a much-improved design and the necessary upgrade to the battery, the iPhone 6 was one of the phones of 2014. Apple needed a big hit, and it got it.
However there was always the worry about 2015's model - whispers that Apple might skip the 'S' model and go straight for the iPhone 7 were sadly unfounded and we got the predictable slight upgrade with the iPhone 6S.
But Apple tried to convince us differently, using the tagline: 'The only thing that's changed is everything'.
Well, except the battery life, design, interface - but there were big improvements to the camera and additional features like 3D Touch and Live Photos that aren't available anywhere other than on the newer 6S models - so are they enough of an upgrade?