Calling all AT&T wireless customers! Get your code valid for a Buy 1 Get 1 FREE Movie Ticket every Tuesday! to get started, text ATTTHANKS to 8758 and download the AT&T Thanks App (or grab it here for iOS or Android). Then open the app, log into your AT&T account and tap on ''Get Tickets'' and choose your movie and theater and the discount will automatically be applied at checkout. Note there is a limit one free ticket per account per week.