It is actually worse than that, all phones have an FM tuner built-in to receive emergency alerts from various nations. At one point, I forget who (possibly Sinclair?, iirc it was a large American broadcast company), attempted to pass legislation in the US to force the OEMs to allow access to the chips which somehow failed. I believe most androids that are rooted are able to access the FM radio irregardless, but I am unfamiliar of the minutia involved. I’d estimate 99% of iPhones in use have an FM radio chip, I believe only Sprint (a defunct American carrier) ever shipped with FM radio available.