iPhone 5S is the latest version of the iconic iPhone. Introduced in September 2013, the smartphone is an upgrade of the iPhone 5 which was released in the same month previous year. It features a similar 7.6mm thin bar-form design that weighs only 112g. It comes with an impressively carved laser-cut sapphire crystal home button that senses your fingerprint and personalizes your preferences as you use the phone. ----- The iPhone 5S houses an improved Dual-core processor clocked at 1.7GHz. It is part of the new A7 chip with a 64-bit architecture (usually found on desktop PCs) that adds speed to all phone operations and removes any lag without compromising on battery power. The A7 is now twice as fast as its predecessor and provides OpenGL ES 3.0 support for life-like graphics on the screen. This powerful graphics improvement essentially means that you can now experience the same visual effects that you are used to experience on a PC with a powerful graphics card. Another new technology introduced in the phone is M7 motion coprocessor. It has been placed in the architecture to take the load off the A7 chip by efficiently gathering data from all sensors and using it as and when required without needing to route to A7 processor again thus significantly improving operation speed. This new flagship smartphone is powered by Apple's latest iOS 7 operating system which comes with Apple's trademark smooth flowing user interface. It enhances animations, apps and the overall display of homescreens by keeping its renowned aesthetics intact. A number of apps are pre-loaded in the phone ROM. Some prominent ones are Maps, Notes, iTunes Store, Stocks, Game Center, Voice Memos, Newsstand and of course the App Store for downloading thousands of apps. iPhone 5S showcases a 4.0-inch LED-backlit IPS capacitive touchscreen. It offers a resolution of 1136 x 640 pixels with 326ppi pixel density, supports multitouch and is coated with Corning Gorilla Glass. The camera on the iPhone 5S is iSight 8MP (with 1.5µ pixels) AF which comes with a bigger image sensor. The 1/3.2-inch sensor also comes with an increased f/2.2 aperture and is capable of taking HD quality photos and movies simultaneously and offers advanced video stabilization as well. The sensor is 33% more sensitive to light and takes in all the available environment illumination to generate the clearest photos. More camera functions include sapphire crystal lens cover, True Tone flash, back-illuminaion sensor, 5-element lens construction, Hybrid IR filter, AF, tap focus, face detection, continuous photography mode and geo-tagging. Other prominent specs of the iPhone 5S are - 3G/LTE connectivity, Wi-Fi, GPS & GLONASS, fingerprint-resistant oleophobic coating, 1.2MP HD 720p FaceTime camera, AirPlay, Siri voice assist with multiple language support, Safari browser, 3.5mm stereo jack, Apple EarPods, Nano SIM card slot, iCloud cloud service, SNS integration, a wide variety of premium accessories and a 1570mAh Li-Ion battery with up to 10 hours of call time/video playback and 40 hours of music playback time. Manufacturer\tApple Model\tiPhone 5S A1530 16GB Similar Models\tiPhone 5S 32GB iPhone 5S 64GB What's in the box?\tBattery, Original charger, Unlocked phone Network Band\t4G/LTE 1700/2100, 4G/LTE 1800, 4G/LTE 1900, 4G/LTE 2600, 4G/LTE 800, GSM 850, GSM 900, GSM 1800, GSM 1900, 3G 850, 3G 900, 3G 1900, 3G 2100 Recommended Networks\tOptus/Vodafone/Telstra 2G, Telstra/Voda NextG 3G 850, Optus/Vodafone 3G 900, 3G 1900, Optus/Vodafone 3G 2100, LTE 1700/2100, Telstra/Optus/Virgin/iiNet 4G, LTE 1900, LTE 2600 Sim Size\tNano SIM Handset Branding (Logo)\tNone/Not Recorded 3G\tYes Next G Compatible\tYes Telstra/Optus 4G Compatible\tYes Form Factor\tBar, Touchscreen Height\t123.8 mm Width\t58.6 mm Thickness\t7.6 mm Weight\t112 g Screen Size (Diagonal)\t4.0 inches Screen Resolution\t1136 x 640 pixels Touchscreen Type\tCapacitive Input Type\tTouchscreen QWERTY Landscape, Touchscreen QWERTY Portrait Ringtone Type\tMP3 CPU\tDual-core 1.7 GHz, Apple A7, M7 motion coprocessor Internal Memory\t16GB Storage Expandable Memory\tNo Camera\t8MP Camera Flash\tYes Secondary Camera\tYes Operating System\tApple iOS Messaging\tEmail, Instant Messaging, MMS, SMS Bluetooth\tYes NFC\tNo Radio\tNo Speakerphone\tYes WiFi\tYes GPS Hardware\tYes Standby Time\tUp to 250 hours Talk Time\tUp to 10 hours