Do Samsung phones even have FM antennas? As far as I know they have to be a minimum length and old school feature phones had a hacky workaround where you had to plug in earbuds to listen to the radio because it was using the earbud cable as an antenna. Modern Samsung phones don't even have headphone jacks so I can't imagine they support FM at all. Probably your best bet is to use an internet radio service that has access to the stations you like.