iPhone 5s features a 4" Retina display, fingerprint identity sensor, brilliant dual cameras and a chip designed specifically to get the best out of iOS. Plus, with its sleek metal and glass design it looks and feels unbelievably thin and light. It's a phone that's simply indispensable. Glass meets metal iPhone 5s has been precisely crafted to be thin, light and beautiful. The aluminium housing is light and cool to touch. The home button and iSight camera are protected by sapphire crystal. And everything inside has been redesigned too, so keep iPhone 5s impressively light for such a powerful smartphone. Touch ID With Touch ID, your iPhone is more secure than ever. Touch ID lets you securely unlock your iPhone with your fingerprint. It can be also used to approve purchases from iTunes, iBooks and the App Store without the need for a password. It's versatile enough to recognise your fingerprint from any angle, so you can access your iPhone in portrait, landscape or any other orientation, and you can even register multiple fingerprints, so that people you trust can unlock your phone too. Faster than ever iPhone 5s is faster than ever thanks to its A7 processing chip, which is up to 2x faster than the A6. It's designed with a 64-bit architecture- that's desktop class processing- to work seamlessly with iOS. It'll allow for faster apps and enhanced graphics in games. An M7 motion coprocessor is included to free up the A7 to the majority of the heavy lifting. The M7 is tasked with measuring motion data from the accelerometer, gyroscope and compass, using less battery power than the A7. It even recognises when you haven't moved for a while and turns of unnecessary processes to preserve battery life for even longer. Take amazing photos With the iPhone 5s' iSight camera, custom designed advanced technologies make it easier than ever to take an amazing photo at any time. A larger sensor with bigger pixels and a wider aperture of f2.2 helps the iSight camera capture more light, giving better performance, even in darker environments. True Tone LED flash adjusts the intensity of the flash to light your subject perfectly, while automatic image stabilisation will help reduce noise and motion blur from shaky hands or moving subjects. It's also easy to take panorama shots, add filters and take a quick burst of photos to catch individual movements in a piece of action. Plus, with the ability to capture HD video at 120 frames per second, you can play videos back in slow motion for added dramatic effect. iOS 8 iOS 8 lets you do things you could only imagine before. Packed with new features, such as more intuitive ways to send messages and a giving you a better picture of your health and fitness information. iOS 8 also works seamlessly with other iOS devices, plus OS X Yosemite on your Mac, letting you switch between your devices and pick up where you left off in apps like Mail, Safari, Pages, Numbers, Keynote, Maps and more. You can answer calls and send photos, videos and texts on your Mac or iPad. Please note: Your iPhone may come with iOS 7 installed. iOS 8 can be downloaded for free over Wi-Fi or a cellular connection by opening the Settings app, tapping on 'General' and then selecting 'Software Update' and 'Download'. It also comes with an amazing collection of apps, so you can start making the most of your iPhone, straight out of the box. Take photos and videos and edit them on the go. Make video calls with FaceTime and send emails. Organise your life with Siri, Maps and the Calendar app. Plus, with over one million apps available on the App Store, you'll find plenty of options to do almost anything you can imagine.