Motorola Atrix HD MB886 4G LTE Android Smart Phone (GSM Unlocked) - Dual-Core, 8MP Camera - Black 2G: GSM 850 / 900 / 1800 / 1900, 3G: HSDPA 850 / 1700 / 1900 / 2100, 4G: LTE 700 MHz Class 17 / 2100 4.5-inch HD splash-resistant Multi-Touchscreen w/ ColorBoost, MOTOBLUR UI with Live Widgets and Protective Corning Gorilla Glass Android v4.0.4 Ice Cream Sandwich (upgradeable), Dual-Core 1.5 GHz Krait Processor, Chipset: Qualcomm MSM896 Snapdragon, Adreno 225 Graphics 8 Megapixel Camera (3264 x 2448 pixels, autofocus) w/ LED Flash + Font-Facing 1.3 Megapixel Camera + video Internal Memory: 8GB, 1GB RAM + microSD Slot Expandable up to 32GB 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.