Apple really wants its users to upgrade to the newest iPhone, so it's starting an iPhone trade-in program to do just that.
Apple is partnering with Brightstar Corp. to run the trade-in exchange, according to Bloomberg News. The news comes from an unidentified source "familiar with the matter."
Mobile-phone distributor Brightstar also does trade-ins for AT&T, T-Mobile and other carriers, likely because of demand for refurbished iPhone 4s in the global market. Apple's stake is obvious -- it wants users to spend money on new models to goose sales and dropping shares. Neither Apple nor Brightstar commented on the story.