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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 ...
iOS 4 is the fourth major release of the iOS mobile operating system developed by Apple Inc., being the successor to iPhone OS 3.It was announced at the Apple Special Event on April 8, 2010, and released on June 21, 2010. iOS 4 was the first version branded as "iOS" rather than "iPhone OS", [1] due to the release of the iPad.
Obsolete, unsupported [citation needed] iPhone OS 3 (stylized as iPhone OS 3.0) is the third major release of the iOS mobile operating system developed by Apple Inc., succeeding iPhone OS 2. It was announced on March 17, 2009, and was released on June 17, 2009. It was succeeded by iOS 4 on June 21, 2010, dropping the "iPhone OS" naming convention.
iOS enforces strict sandboxing to maintain security and privacy. Apps are generally limited to accessing their own containers and specific system-provided directories, such as the Photos library. To access files outside of their sandbox, iOS uses mechanisms like document pickers, file providers, and app extensions.
iOS 5 was the subject of criticism for iPhone 4s users, as the initial release had poor battery life, failures of SIM cards, and echoes during phone calls. These problems were fixed in subsequent releases. iOS 5 is the last version of iOS that supports the third-generation iPod Touch and first-generation iPad.
However, the iPhone 3G is unable to use many features included in this update, such as AirPlay and Safari Text Search. This is the last iOS release to support this iPhone model; iOS 4.3 and later are not compatible with this iPhone model due to hardware limitations and performance issues. [20]
iOS 12.5.7 A7 iPhone 5s: A6 LPDDR2 533 MHz iPhone 5 iPhone 5c: iOS 10.3.4 (iPhone 5) iOS 10.3.3 (iPhone 5c) A5 512 MB LPDDR2 400 MHz iPhone 4s: iOS 9.3.6 A4 LPDDR 200 MHz iPhone 4: iOS 7.1.2 APL0298 256 MB iPhone 3GS: iOS 6.1.6 APL0098 128 MB LPDDR 133 MHz iPhone 3G: iOS 4.2.1 iPhone (1st gen) iPhone OS 3.1.3
iPadOS 14 (iPadOS version derived from iOS 14) 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. [4][5] It ...