I don’t know much about a PSP but isnt’ that like a really lame dumbed down version of a play station?
Of course it doesn’t have the capabilities of a full blown PS3, but as far as portable gaming devices go it’s been pretty much the most powerful one out there...can do Skype too. Combine that with a the ability to make calls and everything else smartphones can do, and I think it should be pretty successful.
http://www.engadget.com/2011/01/26/sony-ericsson-xperia-play-playstation-phone-preview/