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
Linksys iPhone Linksys iPhone The Linksys iPhone was a line of internet appliances from Cisco Systems. The first iPhone model – released by Infogear in 1998 – combined the features of a regular phone and a web terminal. The company was later purchased by Cisco and no new products were marketed under the name between 2001 and 2006. At the end of 2006, Cisco rebranded its Linksys VoIP-based phones under the name, shortly before Apple released an iPhone of its own. This led to a trademark dispute between the two companies, which was resolved on February 20, 2007. The first iPhone was