IPhone 4S announced iPhone 5s and iPhone 5c. This was unusual for Apple as an upper case 'S' had been used since the introduction of the iPhone 3GS in 2009. On September 9, 2014, the iPhone 4S was officially discontinued following the reveal of the iPhone 6 and the iPhone 6 Plus. However, 4S production did continue for developing markets until February 17, 2016. On June 13, 2016, following the release of iOS 10, Apple dropped support on the iPhone 4S, making iOS 9.3.5 the last version available for the device. The runs iOS, Apple's mobile operating system. The user interface of
IPhone accessories The docks have an identical design, with an audio-out and Lightning-in port on the back, and a Lightning connector on the top. One dock was released solely for the iPhone 5 and 5s, with another dock optimized for the iPhone 5c. The dock is not compatible with iPhones in their cases. IPhone accessories The iPhone has a wide variety of accessories made by Apple available for it. Apple EarPods (introduced on September 12, 2012) first shipped with the iPhone 5 and feature a remote control and microphone. They also ship with the fifth-generation iPod touch (without mic) and the seventh-generation