The newest national carrier of the iPhone, T-Mobile, has ended a promotional "introductory price" period for the iPhone 5, raising the down payment from $99 to $149 for the 16GB model -- with similar $50 increases for the 32GB and 64GB models. Though it is still one of the cheapest ways to buy an iPhone 5 rather than buying a no-contract phone or going through a contract with one of the other carriers, the price difference with a T-Mobile plan is now down to about $20 less than buying the iPhone outright.
