BLU Quattro 5.7 HD official Pictures. BLU Quattro 5.7 HD is a Smartphone of blu. The BLU Quattro 5.7 HD Android Smartphone. Announced Feb 2013. Features 5.7″ Display, Nvidia Tegra 3 Chipset, 8 MP Primary Camera, 1.3 MP Front Camera, 2800 MAh Battery, 4 GB Storage, 1000 MB RAM. BLU Quattro 5.7 HD price starts.