The iPhone 5S is a smartphone developed by Apple Inc., released in September 2013. It features a 4-inch Retina display and is powered by the A7 chip, which was the first 64-bit processor in a smartphone. The device supports iOS and offers a range of apps and features, including a high-quality camera and Touch ID fingerprint recognition. The iPhone 5S comes in three colors: silver, gold, and space gray. It has a sleek aluminum body and is known for its durability. With a battery life that supports up to 10 hours of talk time, it was a popular choice among users looking for a reliable smartphone.