T-Mobile, the only major U.S. cellular carrier to not sell the iPhone, will begin carrying the device on April 12th. The carrier will sell the phone under its new 'Uncarrier' policies as T-Mobile attempts to differentiate itself from other cellular networks with new customer-friendly rate plans. New iPhone customers will be able to purchase the 16GB iPhone 5 for $100 down, plus 24 monthly payments of $20. After the payments are finished, customers will see their monthly bills drop. On traditional subsidized plans from AT&T or Verizon, users pay $199 up front, and then see a subsidy payment invisibly built into their monthly plans. However, if the customer goes longer than two y
