I haven't seen this posted, and thought I would warn everybody. I've had the original 2.5G iPhone for about 1.5 years now, and I of course bought it full price (i.e. not subsidized). I don't need data, since I have wifi everywhere but the road, and couldn't justify it so turned it off. When I did that I of course lost SMS, Visual Voice mail, and the "E" in the top left corner of the menubar disappeared. It was like this for the last 1.5 years, until 2.5 weeks ago. I noticed the "E" had appeared again, but I still could not receive internet over the cell network. About two weeks ago though, I suddenly realized I had internet over the network. I called and spent quite literally 1 hour, then 2 hours on the phone with CSRs about the issue. It turns out AT&T has now mandated (and is blaming Apple for forcing this by the way, which is BS) that all iPhones, regardless of whether you bought them full price or not, have a data plan. They had turned on pay per use on my phone, and not told me about it. I now had a bill for ~$250 dollars of data ($1 per 100 KB). I told them I bought mine full price and shouldn't need data, the CSR said that the specific wording in the new manual was that all 3Gs have data. Having the 2.5G I said it doesn't apply. Her tech support and manager agreed, but their computer systems were modified to not allow them to turn off data, or to even put a data block on, it was impossible. They erased my ~$250 bill, but said they were only allowed to erase these types of charges once per customer ever. The conversation ended with bascially "tough, you have a data plan now." I, in a little anger, said I would swap SIMS and just have it turned off, then swap back the SIMS. Their response was that they are now sweeping for iPhones and doing this to everyone. And if they caught me doing this, I would not be able to erase the charges again. Thus, beware everyone. AT&T is presently acting like a big ass, I only hope Verizon gets the iPhone in 1/2010. With Verizon before I switched, and with AT&T up to now, everything was great. Now I am one of those who hates AT&T. I should not be forced to have a data plan if I payed full price, period.