Save on AT&T Prepaid Phone Plans With the Latest DealsAn AT&T prepaid phone plan is one of the easiest ways to save big on your future phone bills. The trade-in deal is only valid with an eligible device and an eligible unlimited plan (speed restrictions apply). AT&T wants to reward you for your loyalty: when you sign up for AT&T Fiber and eligible wireless plans, you can get up to $150 in AT&T Visa Reward Cards. You can save over $800 a year on AT&T Wireless when you bundle four unlimited wireless plans with your current internet plan. Save More With AT&T Family PlansIf you want multiple people on your phone line or are adding a line for your child’s first phone, an AT&T Family Plan is one of the most cost effective ways to make the change.