BLU Studio C Mini D670L HSPA+ Unlocked GSM Dual-SIM Cell Phone - Yellow 2G: GSM 850 / 900 / 1800 / 1900 (SIM 1 & SIM 2) 3G: HSDPA 850 / 1900 / 2100, 4G: HSPA+ 850 / 1900 / 2100 (not LTE) 4.7-inch IPS LCD Capacitive Multi-Touchscreen Android v4.4.2 (KitKat), Quad-Core 1.3 GHz Cortex-A7 Processor, Chipset: Mediatek MT6582, Mali-400 Graphics 5 Megapixel Camera (2592 x 1944 pixels) w/ Autofocus, LED Flash + Front-Facing 2 Megapixel Camera Internal Memory: 4GB ROM, 512 MB RAM + microSD Slot Expandable up to 64GB