Apple iPhone 6s and iPhone 6s Plus: Everything you need to know

Apple is facing a lawsuit in regards to the charging system used in its iPhone 6s

iPhone 6s and 6s Plus UK release date

The iPhone 6s and iPhone 6s Plus went on sale on 25 September 2015 and are available to buy in Apple stores now, as well as from various retailers such asEE, Vodafone, O2, Three and Virgin Mobile.

iPhone 6s and 6s Plus Price

Bought sim-free direct from Apple, the iPhone 6s costs from 539 for the entry-level 16GB version to 699 for the 128GB version, both including VAT. The iPhone 6s Plus, meanwhile, costs from 619 for the 16GB version to 789 for the 128GB version. There is no price variation by colour

On contract from mobile networks, the iPhone 6s costs from around 50 per month and the iPhone 6s Plus costs from around 60, although both require an upfront fee as well.

iPhone 6s and 6s Plus Features

iPhone 6s screen

One of the flagship new features on the iPhone 6s and iPhone 6s Plus is Apple's new 3D Touch technology. This allows sensors below the screen to detect whether the user has applied a tap, a press, or a deep press.

While it is based on the Force Touch technology seen on the Apple Watch and latest MacBook Pro and uses the same Taptic Engine sensor, the deep press function allows users to perform additional actions, some of which are detailed below.

Apple has also updated the glass used on the screen. While not sapphire glass, as had been persistently rumoured, the dual ion-exchange method used in manufacture make it "the strongest cover glass used on any smartphone in the world".

Otherwise, the specs are largely the same as the predecessors, with the iPhone 6s Plus sporting a 5.5in 1920x1080 pixel resolution screen, and the iPhone 6s keeping the 4.7in, 1334x750 resolution screen of the iPhone 6.

iPhone 6s and 6s Plus camera

The main rear camera has been upgraded on both the iPhone 6s and iPhone 6s Plus. While it keeps the f2.2 aperture, it now has a 12-megapixel sensor, rather than the iPhone 6/6 Plus' eight-megapixel sensor.

Apple also claims it has increased the megapixel count, which will provide more detailed photos without image quality degradation.

4K video recording is another new feature, although optical image stabilisation is only available on the iPhone 6s Plus and not the 6s.

The front-facing selfie camera now shoots five-megapixel photos and Retina Flash, which increases the brightness of the screen threefold for taking selfies in low light.

One of the most intriguing new features, however, is the addition of Live Photos. When you take a photo with the iPhone 6s and 6s Plus, the camera will capture video from 1.5 seconds before to 1.5 seconds after the snapshot is taken. Using the 3D Touch deep press, these can then be turned into moving photos (much like the magical photos seen in the Harry Potter films), which can also be used as the iPhone's wallpaper or Apple Watch face (assuming you have an Apple Watch).

iPhone 6s and 6s Plus operating system

The iPhone 6s is the flagship phone for Apple's latest mobile operating system, iOS 9. The operating system is expected to improve battery life, take up less memory and also bring more advanced Siri features (more on all of those below).

For those not investing in an iPhone 6s or 6s Plus, iOS 9 is available to download as a full release on 16 September.

For more information on iOS 9, visit our dedicated page.

iPhone 6s Siri

Siri, Apple's virtual assistant, plays a significant role in the iPhone 6s and 6s Plus, as well as new Apple TV.

One of the main updates is that you can summon her without pressing the home button, simply by saying "Hey, Siri". The feature uses individualised voice recognition, which means only the true owner of the device can use it. Additionally, it is turned off by default, presumably to head off security concerns before they became a PR nightmare.

A small, but aesthetically pleasing change, is when you speak, the waveform that represents your voice is now colourful, rather than a simple white line.

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