Nokia Lumia 1320 RM-955 8GB 4G LTE Unlocked GSM Windows 8 Smartphone - Black - AT&T - No Warranty 2G: GSM 850 / 900 / 1800 / 1900, 3G: 850 / 1700 / 1900 / 2100 4G: LTE 700 / 850 / 1700 / 1900 6" IPS LCD Capacitive Multi-Touchscreen w/ Protective Corning Gorilla Glass 3 Microsoft Windows Phone 8, Dual-Core 1.7 GHz Krait 300 Processor, Chipset: MSM893AB Snapdragon 4, Adreno 305 Graphics 5 Megapixel Camera (2592 x 1944 pixels) w/ Autofocus, LED Flash + Front-facing VGA Camera Internal Memory: 8GB, 1GB RAM + microSD Slot Expandable up to 64GB 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.