We've come across the ViewSonic ViewPad 4 once before, specifically at CES, but today at MWC, we took the "tablet device with a smartphone personality" for another spin and came away rather impressed. The hardware was noticeably more refined this time around and closer to final production, with significantly better fit and finish. While our demo unit was running Android 2.2, ViewSonic is planning to ship the light, thin, and angular, 4.1-inch glass and aluminum monolith with the "latest version" of Gingerbread on board. Might that be the ever-elusive Android 2.4? There's no word yet on pricing, but availability is slated for May. Check out the gallery below and our hands-on video after the break.