NIU Andy 3.5E2I official Pictures. NIU Andy 3.5E2I is a Smartphone of niu. The NIU Andy 3.5E2I Android Smartphone. Announced Feb 2015. Features 3.5″ Display, MT6572M Chipset, 5 MP Primary Camera, 1.3 MP Front Camera, 1300 MAh Battery, 4 GB Storage, 512 MB RAM. NIU Andy 3.5E2I price starts.