LG Optimus L3 E400 official Pictures. LG Optimus L3 E400 is a Smartphone of lg. The LG Optimus L3 E400 Android Smartphone. Announced Jan 2012. Features 3.2″ Display, 3.15 MP Primary Camera, 1500 MAh Battery, 1000 MB Storage, 384 MB RAM. LG Optimus L3 E400 price starts.