iPhone 5C (marketed with a stylized lowercase ‘c’ as iPhone 5c) is a touchscreen-based smartphone developed by Apple Inc. It is one of two successors to the iPhone 5 and one of two predecessors to the iPhone 6, along with its higher-end counterpart, the iPhone 5S. Apple held an event to formally introduce the iPhone 5C and 5S on September 10, 2013, and they were released on September 20, 2013, therefore discontinuing sales of the previous iPhone 5, although it was the first iPhone to be released to GSM carriers such as T-Mobile since the iPhone 4. The 5C originally shipped with iOS 7, Apple’s mobile operating system. The current version of iOS for the iPhone 5C is iOS 8. The 5C uses much of the same hardware as the iPhone 5, with some iOS 7 optimization like slightly improved battery life and software-hardware color coherence. However, there are a few differences from the iPhone 5; the 5C uses a hard-coated polycarbonate casing instead of aluminum used by the 5, along with a standard black glass front (instead of a white glass front offered on silver and gold iPhone models). The 5C lacks some of the features from the 5S; it uses the A6 chip instead of the A7 with motion co-processor, does not include Touch ID, does not support OpenGL ES 3.0, and lacked the Burst iSight camera mode and slow-motion video recording mode until iOS 8. Similar to the fifth generation iPod Touch models, the iPhone 5C is available in five colors: blue, green, pink, yellow, and white.Also most Apple devices are not jailbrakeabe because of the new software update. On September 9, 2014, the 16 and 32GB iPhone 5C models were discontinued in unison with the announcement of the iPhone 6 and iPhone 6 Plus, and the 16 and 32GB models were replaced by a new 8GB model.