According to a tip-off we've received here at The Test Bed, it seems that there's a large amount of doubt about whether the iPhone  - due to launch on 29 June, just in case you hadn't heard - will work as a USB2 mass storage device. If not, you won't be able to carry around your data files with you like you can with an iPod. So at least there might be something this wonder-phone can't do...although no doubt the corporate types will be very happy you can't use it to slurp up the contents of the departmental server.