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iOS is based on macOS. Like macOS, it includes components of the Mach microkernel and FreeBSD. It is a Unix-like operating system. Although some parts of iOS are open source under the Apple Public Source License and other licenses, iOS is proprietary software. Major versions of iOS are released annually.
iOS version history. iOS 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 ...
The following is a list of operating systems released by Apple Inc. As of 2023, there are six supported software platforms: iOS, iPadOS, watchOS, tvOS, macOS and visionOS . Prior to the introduction of the Macintosh in early 1984, Apple had several operating systems for the Apple II series, Apple SOS for the Apple III series, and Lisa OS and ...
iOS 16 is the sixteenth major release of Apple 's iOS mobile operating system for the iPhone. It is the successor of iOS 15, and was announced at the company's Worldwide Developers Conference (WWDC) on June 6, 2022, alongside iPadOS 16, [3] and released on September 12, 2022. It was succeeded by iOS 17 on September 18, 2023.
iOS 15 is the fifteenth major release of the iOS mobile operating system developed by Apple for its iPhone and iPod Touch lines of products. It was announced at the company's Worldwide Developers Conference on June 7, 2021, as the successor to iOS 14 and released to the public on September 20, 2021. [3]
iOS 17 is the seventeenth and current major release of Apple's iOS operating system for the iPhone. It is the direct successor to iOS 16 , which was released one year earlier. It was announced on June 5, 2023, at Apple's annual Worldwide Developers Conference alongside watchOS 10 , iPadOS 17 , and macOS Sonoma .
Cisco IOS. The Internetworking Operating System [2] ( IOS) is a family of proprietary network operating systems used on several router and network switch models manufactured by Cisco Systems. The system is a package of routing, switching, internetworking, and telecommunications functions integrated into a multitasking operating system.
iOS 14 is the fourteenth major release of the iOS mobile operating system developed by Apple for the iPhone and iPod touch lines. Announced at the company's Worldwide Developers Conference on June 22, 2020 as the successor to iOS 13 , it was released to the public on September 16, 2020.