We always suspected the iPhone 3GS was capable of 1080p HD video playback, and now we've got proof. Although Apple lists the iPhone 3Gs's max video playback res at just 640x480, iLounge linked to Chinese forum post claiming that the 3GS could do 30Mbps 1080p playback earlier today -- and when we saw that the only thing we needed to do to test it out was download the free FileAid app, well, you know how we've just spent the last 20 minutes. We tested out a bunch of HD trailers from Apple's QuickTime trailer site, some videos we shot with a Lumix DMC-GH1 and some other random videos with general success, but there were so
