AT&T Trying Hard to Crack Down on Unofficial iPhone Tethering

AT&T customers who have jailbroken their iPhone by using the tethering option unofficially seem to have received a reminder message from AT&T. “They were informed them that they’re planning to update their plan to a tethering plan ($45/mo, incl. 4GB),” as reported by TiPb. AT&T had sent customers using unofficial tethering options an email back…