2G: GSM 850 / 900 / 1800 / 1900, 3G: HSDPA 850 / 900 / 1700 / 1900 / 2100, 4G: LTE 700 / 800 / 850 / 900 / 1700 / 1800 / 1900 / 2100;4.5-inch IPS LCD Capacitive Multi-Touchscreen (up to 10 fingers!) w/ Protective Corning Gorilla Glass 3;BlackBerry 10 OS, Quad-Core 2.2 GHz Processor, Chipset: Qualcomm MSM8974AA Snapdragon 81, Adreno 330 Graphics;13 Megapixel Camera (4128 x 3096 pixels) w/ Autofocus, optical image stabilization, LED Flash + Front-Facing 2 Megapixel Camera;Internal Memory: 32GB, 3GB RAM + microSD Slot Expandable up to 128GB;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.