Sunion S9500n Unlocked Quadband 2 Sim Card with Android 4.1 Smart Phone 4.7 Inch Capacitive Touch Screen-- At&t, T-mobile, H20, Simple Mobile and Other GSM Networks (Black) Dual sim cards standby,GSM 800/850/1800/1900MHz 4.7 inch capacitive Screen Resolution: 854x480 Pixels, 16 million Colors android4.2 256M(RAM)+256M(ROM) microSD memory card (T-Flash card)16GB maximum