What about FM radio? I know that the iPhone doesn't support FM, but other phones do and they use the 3.5mm jack as the antenna. sure they could include the ante

What about FM radio? I know that the iPhone doesn't support FM, but other phones do and they use the 3.5mm jack as the antenna. sure they could include the antenna in the phone, but I am not sure that's as practical as using the 3.5mm jack (please correct me if I'm wrong.)