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Android, Inc. was founded in Palo Alto, California, United States in October 2003 by Andy Rubin, Rich Miner, Nick Sears, and Chris White to develop, in Rubin's words "...smarter mobile devices that are more aware of its owner's location and preferences“

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The version history of the Android operating system began with the release of the Android beta in November 2007. The first commercial version, Android 1.0, was released in September 2008. Android is a mobile operating system developed by Google and the Open Handset Alliance, and has seen a number of updates to its base operating system since its original release .

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Since April 2009, each Android version has been developed under a codename based on a dessert or sweet treat. These versions have been released in alphabetical order: Cupcake, Donut, Éclair, Froyo, Gingerbread, Honeycomb, Ice Cream Sandwich, and Jelly Bean.

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Android 1.0, the first commercial version of the software, was released on September 23, 2008. This release was robot-related codename, "Astro", internally at Google, but the name could not be used officially for trademark reasons

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On April 30, 2009, the Android 1.5 update was released, based on Linux kernel 2.6.27. This was the first release to use a name based on a dessert ("Cupcake"), a theme which would be used for all releases henceforth. The update included several new features and UI amendments

The Android Emulator default home screen

(v1.5).

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•On September 15, 2009, the Android 1.6 SDK – dubbed Donut – was released, based on Linux kernel 2.6.29

The Android 1.6 home screen.

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•On October 26, 2009, the Android 2.0 SDK – codenamed Eclair – was released, based on Linux kernel 2.6.29

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•On May 20, 2010, the Android 2.2 (Froyo) SDK was released, based on Linux kernel 2.6.32.

•Google's Nexus One was the first smart phone to receive Android 2.2 Froyo

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•On December 6, 2010, the Android 2.3 (Gingerbread) SDK was released, based on Linux kernel 2.6.35.

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•On February 22, 2011, the Android 3.0 SDK – the first tablet-only Android update – was released, based on Linux kernel 2.6.36. The first device featuring this version, the Motorola Xoom tablet, was released on February 24, 2011

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•The SDK for Android 4.0.1 (Ice Cream Sandwich), based on Linux kernel 3.0.1, was publicly released on October 19, 2011. Google's Gabe Cohen stated that Android 4.0 was "theoretically compatible" with any Android 2.3.x device in production at that time

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On June 27, 2012, at the Google I/O conference, Google announced Android 4.1 (Jelly Bean). Based on Linux kernel 3.1.10, Jelly Bean is an incremental update with the primary aim of improving the user interface, both in terms of functionality and performance

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Android 4.4 "KitKat" is a version of the Android mobile operating system by google. Google announced Android 4.4 KitKat on September 3, 2013. Although initially under the "Key Lime Pie" ("KLP") codename,

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Android Lollipop is a version of the Android mobile operating system developed by  Google, spanning versions between 5.0 and 5.1.1.[3] Unveiled on June 25, 2014,

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