The Apple phone in question runs on the iOS 7 operating system, which is so far the most advanced OS offered by Apple. It makes the smartphone very versatile as you can comfortably navigate between applications and download innumerable apps from the Apple App Store. It is designed to go perfectly with the A7 chipset, the new and improved iSight camera as well as the Touch ID fingerprint sensor. It brings an intuitive and user-friendly interface and can be updated to the later versions as soon as they are out. - 8MP primary camera with true tone flash, autofocus, geo-tagging, face detection burst mode, 1.2MP front facing camera with HD video recording and backside illumination sensor - 4-inch multi-touch retina display with 1136 x 640 pixels resolution - iOS 7 operating system - Rechargeable battery providing talk-time up to 10 hours on 3G network and standby time up to 250 hours - 1-year manufacturer warranty for device and in-box accessories including batteries from the date of purchase.