CellAllure Book II 5.7" HD screen - OGS/Dual SIM/ 4G (HPSD+) Factory Unlocked Android Smartphone/ 13MP Camera Unlocked GSM Multi carrier no contract smart phone. 5.7 inch HP IPS screen with video camera HD 1080 DPI and Android OS, also with 13MP + 5MP back and front camera. DUAL SIM CARD slots and 4G tech connectivity with Quad-Core high speed processor and supports up to 32GB micro SD. Includes screen protector, protective case and earbuds Works with all GSM's carriers, such as: Nationwide Wireless, Tracfone, Straight Talk, Net10, H20, Consumer Cellular, Red America, T-Mobile, Metro PCS, Lyca, Go Smart, Simple Mobile, Net10, Telcel -mart Family Mobile & many more 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.