alt Hacker NewsI don't think I ever used the FM feature on my phone, except purely to test out whether it worked. I wouldn't make phone purchasing decisions based on whether or not it had a FM radio. A regulation requiring it in the ostensible name of safety would make phones somewhat more expensive and I'm skeptical that it would even help improve safety in an emergency significantly.
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Most smartphones do include most of the FM radio circuitry in the chip used also for Bluetooth connectivity for example. It's just a choice of the manufacturer to do not implement it completely, sometimes in hardware, sometimes in software. Several years ago there was SpiritFM application for Android that allowed to use FM radio on smartphones that sometimes never supported FM radio... oficially. So the only missing piece is sometimes only the software. As a result I think it wouldn't cost somewhat noticeably more to have that feature.
would make phones somewhat more expensive
"somewhat" as in the ballpark of a few cents, definitely less than $1, because it's already there in the reference designs and deliberately removing it would actually take extra work and cost far more.
I remember all the no-name/generic MP3/MP4 players had an FM radio, while Apple's iPods did not. They deliberately chose not to include one, and definitely not because of cost.
How much would an additional frequency cost to add to a sophisticated radio?
> I don't think I ever used the FM feature on my phone
One killer feature for phone-sized portable FM radios is live sports!
Some sports that have TV broadcasts but no radio broadcast will pipe the broadcast audio over an FM channel within the stadium.
Of course for sports that have a radio broadcast, you can tune directly to it.
Depending on the sport, it's really nice to get player background info, or some sports have mics on players that get piped through the radio in your ear.