Posh Mobile Memo S580a - 5.8" Display, 4G H+ GSM Unlocked Smartphone - 1 Year USA Warranty - Black 5.8" LCD Capacitive Touch-panel, Extra Large Display, 5MP Primary Camera with LED Flash, VGA Front Camera Powerful Dual Core 1.2 GHz Mediatek MT 6572 Processor, 512MB RAM, 4GB Internal Memory with Micro SD Support Enhanced 4G HSDPA+ Network Support - GSM/Edge/4G HSDPA+ 850/1900 - Dual Sim 2500mAh Battery, Micro USB Charger, Micro SIM, 1 Year USA Warranty Package Includes: Phone, Wall Adapter, Charging Cable, Headphones, Manual, Battery, Screen Protector 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.