Nokia Symbian mobile

This article is about the operating system. For other uses, see Symbian (disambiguation).
Symbian 
Company / developer Accenture on behalf of Nokia [1]
Programmed in C++[2]
OS family Embedded operating system
Working state Active (Receiving updates until at least 2016) [1]
Source model Proprietary[3]
Initial release 1997 as EPOC32 [4]
Latest stable release Symbian Belle (next release cycle of Symbian^3) / September 2011; 30 days ago (2011-09)
Marketing target Smartphones
Supported platforms ARM, x86[5]
Kernel type Microkernel
Default user interface Avkon [6]
License Proprietary
Official website symbian.nokia.com

Symbian is a mobile operating system (OS) and computing platform designed for smartphones and currently maintained by Accenture.[7] The Symbian platform is the successor to Symbian OS and Nokia Series 60; unlike Symbian OS, which needed an additional user interface system, Symbian includes a user interface component based on S60 5th Edition. The latest version, Symbian^3, was officially released in Q4 2010, first used in the Nokia N8. In May 2011 an update, Symbian Anna, was officially announced, followed by Symbian Belle in August 2011.[8][9]
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Some estimates indicate that the cumulative number of mobile devices shipped with the Symbian OS up to the end of Q2 2010 is 385 million.[11]
By April 5, 2011, Nokia released Symbian under a new license and converted to a proprietary shared-source model as opposed to an open source project.[3]
On February 11, 2011, will provide Symbian based software development and support services to Nokia through 2016 and about 2,800 Nokia employees will be Accenture employees at early October 2011.[13] The transfer was completed on September 30, 2011