The iPhone story for 2015 is remarkable in that it is an ‘S' year, which usually means incremental changes with no obvious physical difference from last year's model, but Apple's given the iPhone 6S a complete structural and functional makeover.

The Apple iPhone 6s has a faster A9 processor, improved cameras, pressure-sensitive touchscreen, and is less prone to bending. It's basically an updated iPhone 6, and comes in new colour options too. As always, Apple has delivered a good product, but it's vastly over-priced.

"Everything's changed" is pushing it, but within the 6s' familiar body lies a surprising amount of innovation

Sweet camera with lovely extra features; Touch ID is we-can't-believe-it fast; All round powerful performance; 3D Touch is a time-saving delight

3D Touch and Live Photos could both do with broad third-party support; Battery life hasn't been improved upon

While the launch of an ‘s' model iPhone is generally more of an update than an overhaul, there are actually quite a few new features in the iPhone 6S to get excited about.

Great 12 megapixel camera; fun video modes including 4K; 3D Touch; powerful

Pricey

A class-leading camera and 3D Touch bring major new functionality to the gold standard in smartphones.

More powerful than iPhone 6; 3D Touch livens up iOS 9; Major camera upgrades; front and back; Stronger aluminum construction; Crisp; gorgeous screen

Smaller battery than iPhone 6; Entry-level 16GB model is insufficient

The iPhone 6s is easily the best iPhone to date, boasting a hugely impressive camera, even faster Touch ID and solid build quality - but you pretty much expected that, right? While 3D Touch is still the new kid on the block and needs time to mature, it's a positive step that shows that the 's' range...

The iPhone 6s is a fantastic device, and your last port of call if you want an iPhone with headphone connectability -unfortunately, it’s now also been relegated to the history books.

The Reviews Are In! Here's What The Pundits Are Saying About The iPhone 6s

The fastest iPhone ever-by a long shot; Double the RAM and processing power; A Touch ID that works in milliseconds instead of second; Vastly improved cameras and video recording capabilities; And that 3D Touch display is going to change the way we interact with our phones

Quick Actions via 3D Touch take some getting used to and only a fraction of apps support them for now; Live Photos, while cool, probably won't be used much by most people

Big changes have been made to Apple's iPhone 6s. The naked eye will consider this smartphone identical to its predecessor with its eerie, twin-like looks, and yet this generation's model represents a substantial step forward, from the fabric of its metal body to the computing components that...

Improved construction; 3D Touch will reap genuine benefits; Faster processor and double the RAM; 12MP rear and 5MP front camera; TouchID is among the best finger scanners

Cameras lack OIS and could be higher in resolution; Battery life still lesser than rivals

Read the headline. That's all you need really, isn't it? It's obvious that Apple's iPhone 6s is a top-notch smartphone: faster than before, with more features, and just as beautifully designed. I'd also hazard a guess that more people than ever are going to buy it.