It uses the Symbian OS which does tend to develop a considerable lag with increased usage specially if the memory is loaded with data. I have been using it for almost a year now and the camera/gallery has become unbearably slow.
Though the messaging, music player games and browsing work fine but if I open up the gallery to browse pictures or files it takes forever.
As of March 2014, Samsung's new operating system is called Tizen.
Samsung Galaxy phones come with the Android operating system.
The Samsung website describes the operating system for the Monte as Proprietry, as in do not ask as we ain't gunna tell you.
The Samsung D900 mobile phone uses Samsung's own proprietary operating system. It is a fairly basic phone but is rated as a good all-rounder by customers.
The Samsung mobile E700 is a great phone that offers many great features. Currently the Samsung E700 actually runs a very simple operating system known as Samsung device.
android
SGP
TouchWiz
As of March 2014, Samsung's new operating system is called Tizen.
yes
bada
Windows 7