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IOS

Updated: Wikipedia source

IOS

iOS (formerly iPhone OS) is a mobile operating system created and developed by Apple for its iPhone line of smartphones. It was unveiled in January 2007 alongside the first-generation iPhone, and was released in June 2007. Major versions of iOS are released annually; the current stable version, iOS 26, was released to the public on September 15, 2025. Besides powering iPhone, iOS is the basis for three other operating systems made by Apple: iPadOS, tvOS, and watchOS. iOS formerly also powered iPads until iPadOS was introduced in 2019 and the iPod Touch line of devices until its discontinuation. iOS is the world's second most widely installed mobile operating system, after Android. As of December 2023, Apple's App Store contains more than 3.8 million iOS mobile apps. 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.

Infobox

Developer
Apple
Written in
C, C , Objective-C, Swift, assembly language
OS family
Unix-like, based on Darwin (BSD), macOS
Working state
Current
Source model
Closed, with open-source components
Initial release
June 29, 2007; 18 years ago (2007-06-29)
Latest release
26.1 (23B85) (November 3, 2025; 37 days ago (2025-11-03)) [±]
Latest preview
26.2 RC 2 (23C54) (December 8, 2025; 2 days ago (2025-12-08)) [±]
Marketing target
mw- iPhone iPad (until 13.0) iPod Touch (until 16.0)
Available in
41 languages
Update method
Over-the-air (since 5.0) Wired connection
Supported platforms
ARM architecture family ARM64 (since 7.0) ARM32 (until 11.0)
Kernel type
Hybrid (XNU)
Defaultuser interface
Multi-touch GUI
License
Proprietary software except for open-source components
Official website
www.apple.com/ios/

Tables

Sources: Apple Inc. Newsroom Archive, Mactracker Apple Inc. model database See also: List of Apple products, iOS version history, iPod § Timeline of models, and iPhone models § Timeline
Sources: Apple Inc. Newsroom Archive, Mactracker Apple Inc. model database See also: List of Apple products, iOS version history, iPod § Timeline of models, and iPhone models § Timeline
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Sources: Apple Inc. Newsroom Archive, Mactracker Apple Inc. model database See also: List of Apple products, iOS version history, iPod § Timeline of models, and iPhone models § Timeline
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Sources: Apple Inc. Newsroom Archive, Mactracker Apple Inc. model database See also: List of Apple products, iOS version history, iPod § Timeline of models, and iPhone models § Timeline

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