Symbian is a cellular working system (OS) and computing platform designed for smartphones and presently maintained via way of means of Accenture. Symbian turned into initially evolved via way of means of Symbian Ltd., as a descendant of Psion's EPOC and runs completely on ARM processors, even though an unreleased x86 port existed. The present day shape of Symbian is an open-supply platform evolved via way of means of Symbian Foundation in 2009, because the successor of the unique Symbian OS. Symbian turned into utilized by many fundamental cellular telecellsmartphone brands, like Samsung, Motorola, Sony Ericsson, and particularly via way of means of Nokia. It turned into the maximum famous phone OS on a global common till the cease of 2010, whilst it turned into overtaken via way of means of Android, even though in a few growing nations, Symbian remains the biggest.[where? ]
Symbian rose to repute way to the S60 platform constructed via way of means of Nokia, first launched in 2002 and powering quite a good deal each Nokia phone. UIQ, any other Symbian platform, ran in parallel, however those systems had been now no longer well matched with every other. Symbian^3, turned into formally launched in Q4 2010 because the successor of S60 and UIQ, first used withinside the Nokia N8, to apply a unmarried platform for the OS. In May 2011 an update, Symbian Anna, turned into formally introduced, accompanied via way of means of Nokia Belle (formerly Symbian Belle) in August 2011. The latest (and closing) telecellsmartphone with Symbian is the Nokia 808 PureView.
On eleven February 2011, Nokia introduced that it'd use Microsoft's Windows Phone OS as its number one phone platform, and Symbian may be its franchise platform, losing Symbian as its predominant phone OS of choice.  On 22 June 2011 Nokia made an settlement with Accenture for an outsourcing program. Accenture will offer Symbian-primarily based totally software program improvement and assist offerings to Nokia thru 2016; approximately 2,800 Nokia personnel have become Accenture personnel as of October 2011.  The switch turned into finished on 30 September 2011. The Nokia 808 PureView turned into formally the closing Symbian phone.