Been using an app like MyWi to enable tethering on your jailbroken iPhone? Then there's a good chance you've already recognized a message like the one above from AT&T, or perhaps an email like the one after the break. By all accounts, the carrier is now cracking down on all unauthorized tethering, and it's asking folks engaged in such birth to either pay up for a proper tethering plan or simply stop tethering altogether -- if it doesn't hear any one thing at all back for you after sending the message, AT&T says it will automatically enroll you in a DataPro 4GB tethering plan (at a rate of $45 a month). We should note that all the reports we've seen so far are from iPhone users, when that with certainty doesn't mean Android users will simply be allowed to slip by unnoticed. Exactly how AT&T is card users isn't clear, however, and we could well just be seeing the beginning of a cat and mouse game as folks try to recognize workarounds to go undetected. More on this one as we get it.



Update: AT&T reached out to us and, yes, this is pretty much all there is to the tale: the "small number of smartphone deal who use their devices for tethering but aren't on our obligatory tethering plan," are being contacted to either cease and desist or prepare to start paying for the service. No word yet on how many forum have been contacted, but it does seem that they're all using iPhones.