The Padfone snaps into a docking slot on the Asus Padstation tablet.
Aloysius Low/CNET Asia)
BARCELONA, Spain--Asus struck a high note when it introduced the one-of-a-kind Transformer Prime last year, but that device was only the beginning.
Today at Mobile World Congress, Asus finally released its long-awaited Padfone. Though the device first made an appearance last May in a promotional video, sightings of the actual device have been rare. And after skipping an official unveiling at CES last month, speculation mounted that Asus would use Barcelona as the stage instead.