Just install the new carrier file from at&t on your iphone which will enable tethering. You don't have to ask AT&T for it. And they can't charge you either until they officially include it in there plan which is not the case yet. At the moment you have unlimited internet access (but officially limited to 5GB) you can use. My whole family does tethering for about 2 months now and we had not a single problem with it so far. Seems like AT&T Doesn't even know or can find out. After all i have been talking with the tech support about a voicemail issue they had to fix and he could not see if i have tethering available or not. When i have to write longer emails, send pictures, upload website etc. i tether my iphone all the time. i don't care about wi-fi spots to much (they are almost all protected anyway - and cracking them is more time consuming as well), i just hook up my laptop in the trunk to my car's power supply and touchscreen in the front (car computer), plug in the iphone on a usb port (also extended to the front) and i am good to go. i always am online whereever i go, can use skype on the road for free, send photos, videos etc. all i need is my car.