In line with its previously announced timeline, T-Mobile USA today began taking pre-orders for the iPhone 5 ahead of its April 12 launch. Under T-Mobile's new payment model, the 16 GB iPhone 5 requires a down payment of $99.99 with the customer also responsible for an additional 24 monthly payments of $20, bringing the total cost of the device to $579.99. The 32 GB and 64 GB models carry the same monthly payment amounts, but require larger down payments of $199.99 and $299.99 respectively. Single-line service plans for the iPho
