List of mobile operating systems (all time)

Android 1.5 Cupcake was the third Android version developed by Google, a major platform release deployable to Android-powered handsets starting in May 2009. The release includes new features for users and developers, as well as ch...

Android 1.6 Donut is a discontinued version and the dessert-themed Android codename for the version 1.6 update of the open source Android mobile operating system. Developed by Google Donut made its debut in fall 2009 for a variety...

Android 2.0–2.1 Eclair is a discontinued version of the Android mobile operating system developed by Google. Unveiled on October 26, 2009, Android 2.1 builds upon the significant changes made by Android Donut. Two major additions...

Android Froyo is a discontinued version of the Android mobile operating system developed by Google, spanning versions between 2.2 and 2.2.3. Unveiled on May 20, 2010, during the Google I/O conference...

Android 2.3–2.3.7 Gingerbread is a discontinued version of the Android mobile operating system developed by Google and released in December 2010. The Gingerbread release introduced support for near field communication (NFC) (used...

Android 3.0–3.2.6 Honeycomb is a discontinued and still available version of the Android platform that was designed for devices with larger screen sizes, particularly tablets. Besides the addition of new features, Honeycomb introd...

Android 4.0 Ice Cream Sandwich is a version of the Android mobile operating system developed by Google. Unveiled on October 19, 2011, Android 4.0 builds upon the significant changes made by the tablet-only release Android Honeycom...

Android Jelly Bean is the name given to three major point releases of the Android mobile operating system developed by Google, spanning versions between 4.1 and 4.3.1. The first of these three, 4.1, was unveiled at Google's I/O de...

Android 4.4 KitKat is a version of the Android mobile operating system developed by Google, spanning versions between 4.4 and 4.4.4. Unveiled on September 3, 2013, KitKat focused primarily on optimizing the operating system for im...

Android Lollipop is a version of the Android mobile operating system developed by Google, spanning versions between 5.0 and 5.1.1. Unveiled on June 25, 2014, during the Google I/O conference, it became available through official o...

Android 6.0 Marshmallow is a version of the Android mobile operating system developed by Google. First unveiled in May 2015 at Google I/O under the codename "Android 'M'", it was officially released in October 2015. Marshmallow pr...

iOS 4 is the fourth version of the iOS mobile operating system designed by Apple Inc. It was released on June 21, 2010, and was the first major release to be renamed to simply "iOS", and the first major release to drop support for...

iOS 5 is the fifth version of the iOS mobile operating system designed by Apple Inc. It had the fewest updates out of all the major iOS versions. It was preceded by iOS 4 (final version was 4.3.5) and succeeded by iOS 6, which was...

iOS 6 is the sixth major release of the iOS mobile operating system designed by Apple Inc., initially released on September 19, 2012. The final version of iOS 6 is 6.1.6. It was preceded by iOS 5 (final version was 5.1.1) and was...

iOS 7 is the seventh major release of the iOS mobile operating system designed by Apple Inc. and successor of iOS 6. It was announced at the company's Worldwide Developers Conference (WWDC) on June 10, 2013, and was released on Se...

iOS 8 is the eighth major release of the iOS mobile operating system designed by Apple Inc. as the successor to iOS 7. It was announced at the company's Worldwide Developers Conference (WWDC) 2014 on June 2, 2014, and was released...

iOS 9 is the ninth major release of iOS, the mobile operating system by Apple Inc. It is the successor to iOS 8 and focuses less on new features and more on under-the-hood optimizations, as well as battery improvements. It was ann...

iPhone OS 1 is the first major release of iOS. iPhone OS 1.1.5 is the latest and final version of iPhone OS 1. This version of iOS was the first iteration of Apple's touch-centric mobile operating system. No official name given on...

iPhone OS 2 is the second major release of iOS. It was the first release of iOS to support third-party applications via the App Store. iPhone OS 2.2.1 was the final version of iPhone OS 2. iPhone OS 2.0, the second major release o...

iPhone OS 3, renamed iOS 3 when support for the iPad was added in iOS 3.2, is the third version of the iOS mobile operating system designed by Apple Inc.. iPhone OS 3.0 became available with the iPhone 3GS. It was released on June...

Windows Phone 7 was the first release of the Windows Phone mobile client operating system, released worldwide on October 21, 2010, and in the United States on November 8, 2010. It received multiple large updates, the last being Wi...

Windows Phone 8 is the second generation of the Windows Phone mobile operating system from Microsoft. It was released on October 29, 2012, and like its predecessor, it features a flat user interface based on Metro design language...

Windows Phone 8.1, rolled out at Microsoft´s Build Conference in San Francisco, California, on April 2, 2014, is the third generation of Microsoft's Windows Phone mobile operating system, succeeding Windows Phone 8. It was release...