Smart phones are a lousy input device
Having owned a Treo 270, then a Treo 650 and now an iPhone, I believe that the smart phones are miserable as input devices. Ever try to write an email longer than a couple of lines? Very frustrating. Then why do software developers continue to write applications that require you to type and type and type on the devices? Why not interface with a computer and sync the relevant information – either directly or via the internet?
My computer has a great screen, a nice keyboard and a useful mouse. No smart phone will ever be that powerful.