Actually the hardware is there, its required by law because in an emergency when all the power is out or the towers are overwhelmed, radio waves are the only real good way of getting emergency instructions or broadcasts out to the public. Any new smartphone has the hardware. On android devices and on jailbroken iPhones you can unlock that hardware and listen to good old FM radio without data. In many third world countries this is officially supported because of the limitations on good data connections. Its just here where they don't want FM to cannibalize their profits where they lock that functionality out. I assume there is an emergency protocol in there where if it "hears" an emergency broadcast it plays it or allows you to hear it without the need of an "app". For the most part however, the hardware just sits there and does nothing.