Do you know what is the meaning of Linux or Windows on a PC? They are operating systems, the main application that run's on the PC hardware and enables all the other applications to work on that PC.
Symbian is the most popular (40% market share) mobile operating system, i.e. the operating system of choice for smartphones. Can be found on the S60 smartphones from Nokia (aka Nokia Symbian/S60) ,Sony Ericsson, Samsung, LG and some old UIQ phones from Sony Ericsson and Motorola.
More info at http://www.symbian.org
Symbian is the most popular (40% market share) mobile operating system, i.e. the operating system of choice for smartphones. Can be found on the S60 smartphones from Nokia (aka Nokia Symbian/S60) ,Sony Ericsson, Samsung, LG and some old UIQ phones from Sony Ericsson and Motorola.
More info at http://www.symbian.org