AT&T has started sending both text message and email notices to iPhone users who are using jailbreak apps to enable tethering, letting them know that AT&T is aware of their unauthorized usage. ModMyi reports that the message states simply, “Did you know tethering your Smartphone to a computer requires a tethering plan? Pls call 888-860-6789 for details or visit att.com/dataplans,” while the email is considerably more detailed.…
