iOS version history - WikipediaiOS is a mobile operating system developed by Apple Inc. and was first released as iPhone OS in June 2007, coinciding with the launch of the first generation iPhone.[1] iPhone OS was renamed iOS following the release of the iPad, starting with iOS 4.[2] With iOS 13, Apple began offering a separate operating system, iPadOS, for the iPad. iOS is also the foundation of the newer audioOS and tvOS, and
