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Walmart will add the iPhone 5 and iPhone 4 (and presumably the 4S) to its no-contract “Straight Talk” unlimited plan, with no carrier subsidy starting on January 11, the company has said. More than 2,000 Walmart stores and the online corporate site will sell the iPhone 5 for $649 (16GB model only) and the iPhone 4 for $449 (8GB model only). Qualified buyers will be able to get a Walmart Credit Card that allows for the phone cost to be billed in $25 monthly increments….
