Samsung Galaxy J1 Duos SM-J100H/DS White (Unlocked international phone) 4GB Built-in Storage: 4GB Operating System: Android OS, v4.4.4 (KitKat) Compatible Carrier & Service: 2G: GSM 850 / 900 / 1800 / 1900 (SIM 1 & Sim 2) Dual SIM: Dual SIM (Micro-SIM, dual stand-by) Touch Screen: Yes Main Display Size: 4.3 inches Main Display Resolution: 480 x 800 pixels Main Display Color: 16M colors |