iOS (formerly iPhone OS) is a mobile operating system developed by Apple Inc. and was first released in June 2007 alongside the first generation iPhone. iPhone OS was renamed iOS following the release of the iPad starting with iOS 4. With iOS 13, Apple began offering a separate operating system, iPadOS, for the iPad. iOS is also the foundation of watchOS and tvOS, and shares some of its code with macOS. New iOS versions are released yearly, alongside new iPhone models. From the launch of the iPhone in 2007 until the launch of iPhone 4 in 2010, this occurred in June or July; since then, new major versions are usually released in September, with the exception of iOS 5, which released in October 2011. Since the launch of the iPhone in June 2007, there have been nineteen major versions of iOS, with the current major version being iOS 26 which was released on September 15, 2025.
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👉 IOS version history in the context of IPhone
The iPhone is a line of smartphones developed and marketed by Apple that run iOS, the company's own mobile operating system. The first-generation iPhone was announced by then–Apple CEO and co-founder Steve Jobs on January 9, 2007, at Macworld 2007, and launched later that year. Since then, Apple has annually released new iPhone models and iOS versions; the latest models being the iPhone 17, the higher-end iPhone 17 Pro and 17 Pro Max, and the thinner iPhone Air. As of July 2025, more than 3 billion iPhones have been sold, and Apple has been the largest vendor of mobile phones since 2023.
The original iPhone was the first mobile phone to use multi-touch technology. Throughout its history, the iPhone has gained larger, higher-resolution displays, video-recording functionality, waterproofing, and many accessibility features. Up to the iPhone 8 and 8 Plus, iPhones had a single button on the front panel, with the iPhone 5s and later integrating a Touch ID fingerprint sensor. Since the iPhone X, iPhone models have switched to a nearly bezel-less front screen design with Face ID facial recognition in place of Touch ID for authentication, and increased use of gestures in place of the home button for navigation.
IOS version history in the context of 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 version history in the context of IOS 26
iOS 26 is the nineteenth and the current major release of Apple's iOS operating system for the iPhone. It was announced on June 9, 2025, at the 2025 Worldwide Developers Conference (WWDC), and released on September 15, 2025.
The successor to iOS 18, its version number was brought forward to 26 as Apple changed its version numbering convention for consistency across its operating systems.
IOS version history in the context of IOS 12
iOS 12 is the twelfth major release of the iOS mobile operating system developed by Apple. Aesthetically similar to its predecessor, iOS 11, it focuses more on performance than on new features, quality improvements and security updates. Announced at the company's Worldwide Developers Conference on June 4, 2018, iOS 12 was released to the public on September 17, 2018. It was succeeded for the iPhone and iPod Touch by iOS 13 on September 19, 2019, and for the iPad by iPadOS 13 on September 24, 2019. Security updates for iOS 12 continued for four years after the releases of iOS 13 and iPadOS 13 for devices unable to run the newer versions. The last update, 12.5.7, was released on January 23, 2023.