If pads and phones are the fastest growing categories in consumer tech, surely a Padfone would be the ultimate combo? That's what ASUS thinks, and it's just introduced its smartphone device that comes with a tablet it can dock into. Display switching is done dynamically, so that reading emails or browsing the web on the fone portion expands itself seamlessly once it's connected into the pad.ASUS announced the Padfone originally appeared on Engadget on Mon, 30 May 2011 04:29:00 EDT. Please see our