T-Mobile is offering a $50 MasterCard Gift Card for FREE when you activate a phone on their new contract-free unlimited talk, text, and web plan for a limited time. Their plan starts at $50 per month for individuals and are as low as $30 per line on a family plan. Over three years, T-mobile could save you over $1k compared the competition. Deal ends May 31, 2013.
T-Mobile also has a trade-in program that enables well-qualified customers who bring in their iPhone 4S or iPhone 4 to get iPhone 5 for $0 down (regularly $99) plus up to $120 off monthly payments. The iPhone 5 is not subsidized on T-Mobile, but they provided 0% APR financing over 24 months and when you take in to account their new contract-free Simple Choice Plan, they are a lot cheaper than the competition.