Sprint is well aware of this, and in an effort to win over customers from the competition, has introduced a low-cost iPhone for Life plan that offers unlimited data and the guarantee of a new iPhone every two years. Naturally, the deal is debuting with the iPhone 6 and iPhone 6 Plus, which become available for pre-order on Sept. 12 at 2 a.m. central time. After picking a phone, you can choose between a $50 unlimited talk, text and data plan for individual users, or nab a $100 Sprint Family Share Pack that supports up to 10 lines with 20GB of shared data.