HP Pro Slate 12 official Pictures. HP Pro Slate 12 is a Smartphone of hp. The HP Pro Slate 12 Android Tablet. Announced Jan 2015. Features 12.3″ Display, Snapdragon 800 Chipset, 8 MP Primary Camera, 2 MP Front Camera, 32 GB Storage, 2 GB RAM, Corning Concore Glass. HP Pro Slate 12 price starts.