By | January 23 2012 5:30 PM

T-Mobile has a couple of deals right now on new Microsoft powered smartphones, and the Nokia Lumia 710 and HTC Radar 4G are both $50 if you meet the requirements. First, the prices are dependent on buying a new two-year contract, but that is usually the case for on-contract devices. The new Nokia Lumia 710 is $50 after a mail-in rebate, so if you go buy one, you'll have to throw down $100 and wait for the rebate. For the HTC Radar 4G, it's $100 online, but if you trade in your old smartphone, it could go down to $50. There is a form you have to fill out on the T-Mobile Web site that determines how much T-Mobile will buy your old phone for.