Customers have been able to enjoy the iPhone experience on Walmart's Straight Talk "BYOD" phone plans for quite some time now, but the prepaid provider will begin directly selling the iPhone 5 -- as well as the iPhone 4 -- on January 11th. The iPhone 5 will be offered in 16GB and will be sold for $649, while the iPhone 4 will come with 8GB storage and go for $449. If you don't want to pay th
