Samsung Galaxy S II Skyrocket HD I757 official Pictures. Samsung Galaxy S II Skyrocket HD I757 is a Smartphone of samsung. The Samsung Galaxy S II Skyrocket HD I757 Android Smartphone. Announced Jan 2012. Features 4.65″ Display, 8 MP Primary Camera, 2 MP Front Camera, 16 GB Storage, 1000 MB RAM, Corning Gorilla Glass. Samsung Galaxy S II Skyrocket HD I757 price starts.