My problem with smartphone is the form factor. To me the 4" VGA screen on the 4700 was ideal. UMPCs are too big and not pocketable, while the kind of screen and resolution you get on a phone device is not useful for document reading. I love the fact that everywhere I go with my PPC I have whatever book I want to read, whatever game I want to play, and can access the internet/email as needed. I wouldn't turn down phone access if it came in the same form factor, but obviously it doesn't now, and won't in the future.