Review: Updated: iPhone 6S

Introduction and designApple's tagline for the iPhone 6S is 'the only thing that's changed is everything', highlighting that the brand knows this is a phone that looks an awful lot like last year's model.It makes sense that Apple would try its hardest to show that, despite the handset looking identical to last year's model, there have been loads of changes under the hood that make this an attractive phone in its own right.The chassis is stronger, the camera sharper – with a new Harry Potte