AT&T says existing iPhone customers can keep that unlimited data plan Reports that AT&T is to end its unlimited data plan for iPhone users are true — but existing customers won Share This Jony Ive’s new look for iOS 7: black, white, and flat all over iPhones get 4G data on AT&T’s GoPhone plan from today Leave a Reply Click here to cancel reply. Name (required) Mail (will not be published) (required) Website Notify me of follow-up comments via email. Notify me of new posts via email.