Nokia Lumia 520 Unlocked GSM Windows 8 OS Cell Phone - Black Technology: 3G Built-in Storage: 8GB Operating System: Microsoft Windows Phone 8 Part Number: Lumia 520 Black Mobile Frequencies: GSM 850 / 900 / 1800 / 1900 MHz Data transfer: GPRS, EDGE, HSDPA, Wi-Fi Form Factor: Bar Phones SIM Card Type: Micro SIM |