Still, I'd imagine the iPhone's bluetooth profile will support using the handset as a modem - almost every mobile I've ever owned, certainly every one with Bluetooth, has been able to be used as a modem.
If you get a phone with bluetooth from Verizon here in the US, you can only use a bluetooth headset with it, no file transfers or anything just headsets.
Mobile phones in the US suck, 3G coverage sucks, all the phones are over priced and featureless.
As much as the iPhone is helping move cell phones in the US forward its not doing a good enought job because at least if it had 3G maybe ATT would upgrade their services or make coverage more widespread.