For me it’s the notification light you used to find on older phones, was particularly good to know if your phone was charged without picking it up
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Are you sure the hardware is still there? I only ask because given the number of hackers out there, I'm surprised someone hasn't come out with a patch or something to make it more ubiquitous.
A lot of it isn’t there anymore….
But because it was a hardware thing, the patch would involve rooting your phone, something most people won’t do.
I don't know if they still have it, but this was a well-known problem for a long time.
i think I recall that the Bluetooth hardware is essentially an FM tuner. Just needed a wired headphone to use as an antenna. My Moto Stylus 2022 still has it.
It's not strictly there as a separate feature. Modern radio chips in phones are universal programmable radios, they can catch and process any wavelengths if you install correct code into them and plug a correct antenna. The same radio chip processes your 5G, Bluetooth, WiFi and everything else.
What phones are missing are FM antennas and radio firmware with FM support. This FM support is a paid feature for phone makers, so they don't add it.