Samsung describes the Galaxy S naming convention as follows:
“S” (Super Smart) –Devices at the very pinnacle of Samsung’s mobile portfolio. This class will only be used on flagship devices such as the Samsung Galaxy S, the award-winning smartphone that has already sold 10 million units throughout the world.
Bellevue, Wash. - Aug. 30, 2011
Samsung Galaxy S II at T-Mobile
T-Mobile USA, Inc. is pleased to announce the upcoming availability of the Samsung Galaxy S™ II at T-Mobile this fall. Featuring a brilliant 4.52-inch Super AMOLED Plus touch screen – one of the largest screens available on a Galaxy S II device – T-Mobile's Galaxy S II promises to keep customers entertained and connected while on the go. We look forward to sharing more information in the coming weeks.