iPhone is a NoNo if you need the phone to work with. It does internet and email well, typing requires,however, a very steady position as the touch screen keyboard is small.
It does not give any 'receive' message after sending SMS, has no ability of saving email attachements, difficult to transfer files 'on the fly', bluetooth only possible with Apple headset or car-set, no IR.
If not jailbroken, no video possible, no zooming with cam and hand-cuffed to the Apple store for apps and sounds; if jailbroken....no warranty anymore....
Nice gadget, but not for any office use.
Need to watch my security cams when away, how else can I find out what wife and dog are up to, the safari browser does not allow active-x, so not possible.
The new Blackberry is what I am looking at, considering this as next device.