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 X September 12 press event, the first public event held at the Steve Jobs Theater on the company's new Apple Park campus in Cupertino, California. The iPhone X was unveiled during that keynote. Its US$999 starting price is the most expensive iPhone launch price. The price is even higher in international markets due to currency fluctuations, import fees and sales taxes. An unlocked version of the phone was made available for purchase in the United States on December 5, 2017. In April 2018, the Federal Communications Commission divulged images of an unreleased gold-colored iPhone X model. As opposed to the space