ASUS ZenFone 2 Unlocked Cellphone, 64GB, Black (U.S. Warranty) Compatible with GSM Networks including AT&T, T-Mobile and cellular network providers utilizing GSM network such as: Straight Talk, Walmart Family Mobile, MetroPCS, Simple Mobile, Brightspot, Net10, h20 Wireless, and Cricket Wireless. This model does not include earphones Unlocked GSM, Dual SIM smartphone - First Sim - 2G/3G/4G/LTE and Second Sim - 2G Only - voice and basic text. No MMS (Multimedia messaging) with pictures 64-bit Intel 2.3GHz Quad Core processor with 4GB RAM and 64GB storage 5.5-inch IPS full HD display (Gorilla Glass 3); 13MP rear and 5MP front camera. GSM/EDGE (850, 900, 1800, 1900 MHz), UMTS/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz), LTE (Bands 1, 2, 3, 4, 5, 7, 8, 17, 20). This device is not compatible with CDMA Networks such as: Verizon, Sprint, and US Cellular