Blu Studio X Plus D770u 8GB 3G Black Unlocked GSM HSPA+ Android Phone 5.5 1GB RAM Technology: 3G Built-in Storage: 8GB Operating System: Android v4.4.2 (KitKat) Part Number: D770U BLACK Mobile Frequencies: GSM 850 / 900 / 1800 / 1900 MHz (SIM 1 & SIM 2) UMTS 850 / 1700 / 1900 MHz Data transfer: GPRS, EDGE, HSDPA, Wi-Fi Form Factor: Smart Phones Dual SIM: Yes |