This isn't a lot of help for most casual users, but a Jailbroken iPhone can Bluetooth communicate. I broke into mine a few months ago, took about 3 minutes total (and is completely restorable, just read up on it first if you're interested) and have seen huge improvements in performance as well as the ability to have apps like video recording (Cycorder)and streaming live video/audio (Qik App) on a standard 3G where Apple released the 3GS with the same camera but it does video. Mine also multi-tasks now, running multiple apps and having a pop up tab to pick which app I want to view while the others work.
Yes, this is not for most and took a lot of thinking before I did it. Some believe too much hype about voiding warranties but in reality I didn't like having a unit capable of so much more and Apple telling me (consumers) that we shouldn't be doing these things because it takes money away from them - thought my $400 covered that but I guess Apple/AT&T needs more $. IMHO it's the best thing I could have done.
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