Symbian OS
was originally owned by Symbian Ltd. Latter in 1998 companies like Nokia,
Ericsson, Symbian come together and renamed it Symbian OS.
First
devices to use Symbian OS were Ericsson R380 and were also referred to as first
Smartphone. Later Nokia 9210 Communicator was regarded to be the first open
phone based in Symbian Foundation was established which was a non-profitable
organization and in 2010 Symbian Platform was officially made available as open
source. Before Android and iOS Symbian was the market leader in mobile phones
OS. Until 2011 Symbian OS was at the top in market share but now a behind
Android. This made Nokia replacing Symbian with Window Phones as the OS for its
future mobiles phones.