AT&T is letting some longtime iPhone users sign back up for its $30 unlimited data plan after having switched to one of the newer tiered options, according to an Associated Press report. The report claims that AT&T has allowed iPhone subscribers who have had an unlimited data plan in the past—as in, prior to the company’s June 2010 switch to tiered data pricing—to switch back to the plan. It cites Jose Argumedo, of Brentwood,…
