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Android Jelly Bean

Android Jelly Bean
A version of the Android operating system
Android logo (2007-2014).svg
Android 4.2 on the Nexus 4.png
Android 4.3.1 Jelly Bean running on a Nexus 4.
Developer Google
Released to
manufacturing
June 27, 2012; 4 years ago (2012-06-27)
Latest release 4.3.1 (JLS36I) / October 3, 2013; 3 years ago (2013-10-03)
Preceded by Android 4.0.4 "Ice Cream Sandwich"
Succeeded by Android 4.4.x "KitKat"
Official website Official website
Support status
Discontinued

Android 4.1–4.3.1 "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 developer conference in June 2012, focusing on performance improvements designed to give the operating system a smoother and more responsive feel, improvements to the notification system allowing for "expandable" notifications with action buttons, and other internal changes. Two more releases were made under the Jelly Bean name in October 2012 and July 2013 respectively, including 4.2—which included further optimizations, multi-user support for tablets, lock screen widgets, quick settings, and screen savers, and 4.3—contained further improvements and updates to the underlying Android platform.

Android 4.1 Jelly Bean was first unveiled at the Google I/O developer conference on June 27, 2012, with a focus on "delightful" improvements to the platform's user interface, along with improvements to Google's search experience on the platform (such as Knowledge Graph integration, and the new digital assistant Google Now), the unveiling of the Asus-produced Nexus 7 tablet, and the unveiling of the Nexus Q media player.

For Jelly Bean, work was made on optimizing the operating system's visual performance and responsiveness through a series of changes referred to as "Project Butter": graphical output is now triple buffered, vsync is used across all drawing operations, and the CPU is brought to full power when touch input is detected—preventing the lag associated with inputs made while the processor is in a low-power state. These changes allow the operating system to run at a full 60 frames per second on capable hardware.


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