Samsung Galaxy I9300 Case, Samsung Galaxy I9300 Cases -Joker and Harley Quinn Polycarbonate Hard Case Back Cover for Samsung Galaxy S3/I9300 3D Compatible with Samsung Galaxy S3 and Samsung Galaxy I9300 Snaps on for a slim, secure fit Low profile. Slim, lightweight design slips in and out of pockets with ease. Easy access to Multi-Touch display, all ports, and controls All-around protection.