Blackberry Q10 SQN100-3 16GB 4G LTE Unlocked GSM OS 10 Phone - White/Gold 2G: GSM 850 / 900 / 1800 / 1900, 3G: HSDPA 850 / 900 / 1900 / 2100, 4G: LTE 800 / 900 / 1800 / 2600 3.1-inch Super AMOLED Capacitive Multi-Touchsscreen + Full QWERTY keyboard BlackBerry 10 (upgradable), Dual-Core 1.5 GHz Krait Processor, Chipset: Snapdragon S4, Adreno 225 Graphics 8 Megapixel Camera (3264 x 2448 pixels) w/ Autofocus & LED Flash + Front-Facing 2 Megapixel Camera Internal Memory: 16GB, 2GB 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.