T-Mobile is offering: buy one Samsung Galaxy S8 Android 64GB Smartphone and get second S8 FREE for a limited time. Discount is paid through a Prepaid MasterCard ($750 Rebate – $30 down & $30/mo x 24) for qualifying customers on or upgrade T-Mobile ONE or Simple Choice Unlimited Plan with 24-Month finance agreement. The deal is also valid for Samsung Galaxy S8+ but will only cover up to $750 of the cost.