While Apple doesn't allow tethering with the iPhone 3G, if it's jailbroken, they can't tell you what to do, can they? After it's jailbroken, getting your tether on is surprisingly easy. All you need is a pair of programs, 3proxy and MobileTerminal. Create an ad-hoc Wi-Fi network with your notebook, join it with your iPhone, perform a bit of beginner's voodoo with MobileTerminal and your browser, and voila, you're cruising on AT&T's 3G network on your laptop via your iPhone. It really is easy, but be careful, if AT&T notices your data usage is wonky, they will probably rape you with massive fees. Good luck, and Godspeed. [Cre.ations.net]
If ATT did allow this, there would certainly be more charges. Does anyone know how much more it is to tether with an ATT device?
I wish they would have some different plans available for the iPhone. For example, you could choose to use edge only (for people outside of 3G area), have tethering as an option, have unlimited data as an option instead of a requirement (I don't want to pay $35 per month for 3G when I have free wifi 95% of the time). Maybe have some more options with voice plans (I think it goes from 450 to 900). etc etc etc.
I think ATT is just milking this exclusive deal with Apple while they can. As soon as other carriers offer the iPhone, I think we'll see a lot more competitive pricing and options with data. Maybe we'll see a CDMA iPhone in a few more years?