FinePhone&reg; I9 Unlocked Quadband Dual Sim Android 4.1 Os with 5 Inch Touch Screen Smart Phone - At&t, T-mobile, H20, Simple Mobile and Other GSM Networks (White) with Free case Unlocked Quad Band Dual SIM GSM 800/850/1800/1900MHz Android 4.1 5 inch Touch Screen Resolution:854x480Pixels, 1600K Colors Unlocked cell phones are compatible with GSM carriers like AT&T and T-Mobile as well as with GSM SIM cards (e.g. H20, Straight Talk, and select prepaid carriers). Unlocked cell phones will not work with CDMA Carriers like Sprint, Verizon, Boost or Virgin.