AT&T: Switch and Get Up to $800 Per Line to Pay Off Your Old Phone

Requires 120+ days with your previous carrier in good standing, at least 4 smartphone installment payments made, and an amount still owed (payoff and/or early termination fee). Buy a new phone on a 36-month installment plan, buy at full price, or bring your own compatible unlocked smartphone. Port-in from an eligible third-party carrier on a postpaid voice & data plan (excludes Cricket, AT&T Prepaid, AT&T resellers). Upload your most recent bill at att.com/switcherpayoff within 60 days of activation; line must stay active at least 60 days; card delivered in 8-10 weeks and expires 6 months after issuance. If the line is cancelled within 36 months, AT&T may charge back the card value (100% within 12 months, 50% in months 13-24, 25% in months 25-36). No fixed end date stated; subject to change.