BLU Dash L4 LTE official Pictures. BLU Dash L4 LTE is a Smartphone of blu. The BLU Dash L4 LTE Android Smartphone. Announced Dec 2017. Features 4.0″ Display, MT6737 Chipset, 5 MP Primary Camera, 2 MP Front Camera, 1700 MAh Battery, 8 GB Storage, 1000 MB RAM. BLU Dash L4 LTE price starts.