Blackberry Z10 16GB OS 10 GSM Unlocked Smartphone - Black BlackBerry 10 upgradable to v10.1, Dual-Core 1.5 GHz Krait Processor, Chipset: Qualcomm MSM896 Snapdragon, Adreno 225 Graphics 8 Megapixel Camera (3264 x 2448 pixels) ) w/ Autofocus, LED Flash + Front-Facing 2 Megapixel Camera, 720p@30fps + Video 1080p@30fps, video stabilization Internal Memory: 16GB storage, 2GB RAM + microSD Slot Expandable up to 64GB Model: STL100-4 GSM 850 / 900 / 1800 / 1900 CDMA 800 / 1900, HSDPA 900 / 2100, LTE 700 MHz Class 13 4.2" Capacitive Multi-Touchscreen 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.