HTC 8X 6990L 16GB Unlocked GSM 4G LTE Windows 8 OS Smartphone w/ Beats Audio Sound - Black Unlocked for use with all GSM Carriers worldwide (like AT&T and T-Mobile) 2G: CDMA 800 / 1900, 3G: CDMA2000 1xEV-DO, 4G: LTE 700 MHz Class 13 Microsoft Windows Phone 8 OS; Dual-core 1.5 GHz Processor, 16 GB storage, 1 GB RAM 4.3" S-LCD2 Multi-Touchscreen with Protective Corning Gorilla Glass 2 8 Megapixel Camera w/ Autofocus, LED Flash + Front-Facing 2.1 Megapixel Camera