Apple'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 2014's model.
It makes sense that Apple would try its hardest to show that, despite the handset looking identical to the iPhone 6, 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 Potter-esque way of capturing your snaps – and there's even a completely new way of interacting with the screen. On paper, it's an impressive upgrade.