Acer NeoTouch P400 official Pictures. Acer NeoTouch P400 is a Smartphone of acer. The Acer NeoTouch P400 Windows Mobile Smartphone. Announced Feb 2010. Features 3.2″ Display, Snapdragon S1 Chipset, 3.15 MP Primary Camera, 1090 MAh Battery, 256 MB RAM. Acer NeoTouch P400 price starts.