The iPhone 5S (stylized and marketed as iPhone 5s) is a smartphone that was designed and marketed by Apple Inc. It is the seventh generation of the iPhone, succeeding the iPhone 5. The device was unveiled on September 10, 2013, at Apple’s Cupertino headquarters. It was released on September 20, 2013, along with its lower-cost counterpart, the iPhone 5C.^[15]

The iPhone 5S maintains almost the same external design as its predecessor, the iPhone 5, although the 5S received a new white/gold color scheme in addition to white/silver and space gray/black. The 5S has vastly upgraded internal hardware, however. It introduced the A7 64-bit dual-core system-on-chip, the first 64-bit processor to be used on a smartphone, accompanied by the M7 “motion co-processor”. A redesigned home button with Touch ID, a fingerprint recognition system which can be used to unlock the phone and authenticate App Store and iTunes Store purchases, was also introduced. The camera was also updated with a larger aperture and a dual-LED flash optimized for different color temperatures.

The iPhone 5S originally shipped with iOS 7, which introduced a revamped visual appearance among other new features. Designed by Jony Ive, iOS 7 departed from skeuomorphic elements used in previous versions of iOS in favor of a flat, colorful design. Among new software features introduced to the iPhone 5S were AirDrop, an ad-hoc Wi-Fi sharing platform; Control Center, a control panel containing a number of commonly used functions; and iTunes Radio, an internet radioservice. Earphones known as EarPods were included with the 5S, and Apple released accessories including a case and a dock.