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  1. en.wikipedia.org › wiki › IOS_4iOS 4 - Wikipedia

    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", due to the release of the

  2. iOS 4 (codenamed "Apex") was the 4th major release of iOS designed and developed by Apple for the iPhone, iPod touch and iPad, being the successor to iPhone OS 3. Contents. 1Features. 1.1New features. 2Support. 2.1Limitations on older models. 2.2Release history. 2.3End of support. 3Trivia. 4References. 5External links. Features.

  3. www.wikiwand.com › en › IOS_4IOS 4 - Wikiwand

    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 was released on June 21, 2010. iOS 4 is the first iOS version issued under the "iOS" rebranding, dropping the "iPhone OS" naming convention of ...

  4. Dec 13, 2011 · When the original iPhone launched, the OS was called "iPhone OS" and it kept that name for four years, only changing to iOS with the release of iOS 4 in June of 2010.

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