Leave that ques in exam
symbian, android, windows, bada,
Windows OS: Windows 7 XP Vista Mac: OSX Lion Leopard Chromebook: Chrominium Others: Ubuntu
Linux is by far the most common operating system in the world. Note that I am including ALL computers, not just desktops and servers, since the question never specified. Once you add in all the cell...
Symbian, Brew, Android, iOS, Windows Mobile OS.