Actually, the vast majority of mobile phones do have built-in FM. That might not be true in the US, but it is certainly true of the the vast majority of mobile

Actually, the vast majority of mobile phones do have built-in FM. That might not be true in the US, but it is certainly true of the the vast majority of mobile phones worldwide. More likely: most US mobile phones not made by Apple also have FM, but the carriers block it. Hence http://www.npr.org/blogs/alltechconsidered/2015/04/16/400178385/the-hidden-fm-radio-inside-your-pocket-and-why-you-cant-use-it http://www.npr.org/blogs/alltechconsidered/2015/04/16/400178...