Yezz Billy 4.7 Unlocked Phone - Retail Packaging (Blue) 4.7" HD display Plus 8MP Camera and 2MP Front Camera. Unlocked Dual SIM, 8GB Internal storage and 1GB RAM with external memory slot, Micro SD, for up-to 128GB. Windows 8.1 smartphone - Processor 1.2GHz Quad Core. Battery 1780 mAh. Bluetooth - Wi-Fi - Hotspot and GPS. Phone includes: 3 back covers (Blue, Red, white). 24 months warranty. GSM bands (850/900/1800/1900) 4G HSPA+ bands (850/900/1900/2100) Compatibility carriers: AT&T, T-Mobile, Cricket, MetroPCS, Straight Talk and other GSM carriers. Not compatible: this Phone will Not work with CDMA carriers like Verizon, Sprint, Virgin or Boost mobile. 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.