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What Is iPhone OS?
Apple's iPhone OS, now known as iOS, was originally developed for the iPhone but has since expanded to be used in the iPod Touch and iPad. The iPhone OS was renamed iOS in June 2010. As of June 2011, iOS 4.3 is the current version.... More »
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en.wikipedia.org/wiki/IOS

iOS (formerly iPhone OS) is a mobile operating system created and developed by Apple Inc. exclusively for its hardware. It is the operating system that presently ...

en.wikipedia.org/wiki/IPhone_OS_1

iPhone OS 1 is the first major release of iOS, Apple's mobile operating system. iPhone OS 1.1.5 is the latest and the last version of Apple's iPhone OS 1.

www.lifewire.com/what-is-ios-1994355

Aug 25, 2017 ... Formerly known as the iPhone OS, iOS is Apple's mobile operating system used to run the popular iPhone, iPad and iPod Touch devices.

support.apple.com/en-us/HT201685

Sep 23, 2017 ... You can find the version of iOS or iPod software installed on your iPhone, iPad, or iPod with your device or in iTunes.

www.apple.com/ios/ios-11

With iOS 11, new features and capabilities bring iPad to life like never before. And make iPhone more essential than ever to your everyday life.

support.apple.com/en-us/HT204204

Sep 19, 2017 ... Learn how to update your iPhone, iPad, or iPod touch to the latest version of iOS —wirelessly or using iTunes. You can update your iPhone, ...

www.cultofmac.com/191340/the-evolution-of-ios-from-iphone-os-to-ios-6-gallery

iOS 1.0. At the unveiling of the original iPhone, Steve Jobs described the iPhone's software as a variant of OS X. Apple literature referred to the iPhone's ...

www.theverge.com/2011/12/13/2612736/ios-history-iphone-ipad

Sep 16, 2013 ... 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 ...

www.theiphonewiki.com/wiki/IOS

Mar 26, 2017 ... iOS, formerly known as iPhone OS (and just Mac OS X), is the operating system for the Apple TV, iPad, iPad mini, iPhone, iPod touch. iOS has ...