When 4th-place U.S. cell carrier T-Mobile launched the iPhone last month, customers could purchase it for a $100 down payment with 24 monthly payments of $20 to cover the full cost of the phone. Now, however, T-Mobile has ended that promotion and the 16GB iPhone 5 has a $150 down payment with the same monthly payments, effectively raising the cost of the phone to $630 from $580 over the life of the plan, TmoNews reports. The
