what are the different types of mobile phone operating systems?
['Android OS (Google Inc.) ... ', '2. Bada (Samsung Electronics) ... ', 'BlackBerry OS (Research In Motion) ... ', 'iPhone OS / iOS (Apple) ... ', 'MeeGo OS (Nokia and Intel) ... ', 'Palm OS (Garnet OS) ... ', 'Symbian OS (Nokia) ... ', 'webOS (Palm/HP)']