Acer BeTouch E100 official Pictures. Acer BeTouch E100 is a Smartphone of acer. The Acer BeTouch E100 Windows Mobile Smartphone. Announced Oct 2009. Features 3.2″ Display, Snapdragon S1 Chipset, 2 MP Primary Camera, 1140 MAh Battery, 256 MB RAM. Acer BeTouch E100 price starts.