iPhone 6s full review

When the iPhone 6 launched last year we couldn't wait to get our hands on it, but one year on and already it's old news with a brand-new, even better iPhone unveiled in the form of the iPhone 6s. The iPhone 6 is still available to buy at a lower price, though, so it's still an option for potential iPhone buyers. You might also be wondering whether it's worth an upgrade if you've already got the iPhone 6. We take a closer look at the differences between the iPhone 6 and iPhone 6s in this comparison to help you decide which is right for you.

You might also like: iPhone 6s vs iPhone 6s Plus. Plus, thinking of buying a new iPhone? Thinking about buying a new iPhone? Here's how the new ones compare with the old ones: iPhone buying guide: Should you buy an iPhone 6s, iPhone 6s Plus, iPhone 6, iPhone 6 Plus, the iPhone 5s, an older iPhone, or wait for iPhone 7?

iPhone 6 vs iPhone 6s comparison: Price and availability

The iPhone 6s was unveiled on 9 September at Apple's jam-packed special event, and became available to pre-order on 12 September. You can find out how to pre-order the iPhone 6s here. It's set to make its way into the hands of the postman onto the shelves of Apple Stores on 25 September.

The iPhone 6, on the other hand, has been available for a year, and remains available to buy even though there's a newer model available. That said, it has been limited to Silver and Space Grey (the Gold iPhone 6 is no more) and the 128GB model has been removed from the line-up.

The iPhone 6s has four colour options and three storage options, which we'll talk about more below.

When it comes to pricing, the iPhone 6s starts at £539 with the bigger iPhone 6s Plus model starting at £619. The iPhone 6 is cheaper, starting at £459, with the iPhone 6 Plus now starting at £539.

iPhone 6 vs iPhone 6s comparison: Design and build

At first glance, you might think that the iPhone 6 and iPhone 6s are the same phone, but actually there's a lot that's changed both in terms of design and technical specs.

First of all there's a new colour option available called Rose Gold, and so far it's proving to be a big hit. The iPhone 6s is also available in Gold, Silver and Space Grey. It's also made out of a more durable aluminium called Series 7000, which is the same material used for the Apple Watch Sport models. This is presumably to prevent a repeat of the bendgate debacle that happened when some iPhone 6 Plus owners found that their iPhones had bent after prolonged periods of time spent in their pocket.

Aside from that, the design and build of the iPhone 6 and iPhone 6s is essentially the same. The new 3D Touch display (which we talk more about below) has meant a teeny tiny increase in height, width, depth and weight, but you're unlikely to notice.

Read next: iPhone 6s review | iPhone 6s Plus review | iPhone 6s vs iPhone 6s Plus comparison review

iPhone 6 vs iPhone 6s comparison: Display

The iPhone 6 and iPhone 6s have the same screen when it comes to pixels, but very different displays when it comes to the technology behind them.

The iPhone 6 and 6s both have a 4.7in display with a resolution of 1334 x 750 at 326ppi (pixels per inch), while the iPhone 6 Plus and iPhone 6s Plus have 1920 x 1080 pixel displays at 401ppi.

What's changed is the addition of new 3D Touch technology, one of the key features of Apple's new iPhones. 3D Touch means that the display on the iPhone 6s can distinguish between a tap, a light press and a hard press, and that opens up a whole host of new navigation, interaction and gesture possibilities.

You can find out more about 3D Touch and how it works here. Or take a look in this video:

iPhone 6 vs iPhone 6s comparison: Specs and hardware

Inside the iPhone 6s is a new, even speedier chipset made up of the A9 64-bit processor and M9 motion coprocessor. We've yet to run benchmark tests on the new iPhone but we'll be updating this article when we have the results. Expect them to be incredible.

That said, the iPhone 6's benchmark test results were already amazing thanks to the A8 and M8 chipset, so it's arguable whether you really need that extra speed. The iPhone 6 has 1GB RAM, though, and the 6s reportedly has 2GB which could make a pretty big difference, but we'll have to wait until we've spent more time with the iPhone 6s to find out.

Another improvement comes in the form of a new second-generation Touch ID fingerprint sensor. It's designed to be much faster and more accurate than the Touch ID in the iPhone 6.

Connectivity options remain the same – you'll get 4G LTE Advanced, 802.11ac WiFi, Bluetooth 4.2, NFC and more with both of these iPhones.

iPhone 6 vs iPhone 6s comparison: Cameras

In addition to the new processor and Touch ID, Apple has also upgraded the cameras in the iPhone 6s. The iPhone 6 has an 8Mp rear-facing camera, while the iPhone 6s has a 12Mp rear-facing camera. Some of the tech behind the camera has been improved too – there's now tap to focus with Focus Pixels, for example.

Video recording has gone from 1080p in the iPhone 6 to brilliant 4K video recording in the iPhone 6s. The iPhone 6s Plus also has optical image stabilisation for video.

Plus, the front-facing camera can now capture 5Mp photos rather than 1.2Mp, and the display has become a front-facing flash to make selfies even better.

Battery life remains the same at up to 10 hours of internet browsing or 11 hours of video playback.

iPhone 6 vs iPhone 6s comparison: Software

Both the iPhone 6 and iPhone 6s run iOS 9 (if you've already got your iPhone 6 you can update it to iOS 9 now), but if you're using the iPhone 6s you'll get the addition of Live Photos, which are essentially three second clips captured when you take a photo to bring your images to life.

You can find out more about iOS 9 and how to get it by following the links below.

iOS 9 preview

iOS 8 vs iOS 9 comparison

How to install iOS 9

iPhone comparison reviews

If you've enjoyed this article, perhaps you'd be interested in more iPhone buying advice? We've written a series of comparison reviews, which set various combinations of iPhone against one another, head to head:

These may be useful if you're trying to device between two specific iPhone models.

iPhone buying guide, autumn/winter 2015

And for a broader look at Apple's current iPhone range, take a look at our iPhone buying guide video for autumn/winter 2015:

Or, if you'd prefer to see our buying advice in written rather than video form, head over to our iPhone buying guide article.

But now, on to the verdict!

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