With activation of a new 2-year contract, AT&T Wireless discounts select new and refurbished Android smartphones and tablets, dropping prices to as low as $0. Plus, each phone includes a $50 Google Play Store credit. (You'll receive the credit via email within seven business days.) Plus, each device receives free shipping. The credit expires July 31. A couple best bets, with price comparisons reflecting the $50 credit:
Motorola Moto X Android Smartphone in White or Black for free ($50 price low)
Samsung Galaxy Mega Smartphone in Black for free (pictured, $50 price low)
Note that a $40 activation fee applies.