FM radio supports comes to unlocked Samsung Galaxy S9 and S9 Plus
Unlocked Galaxy S9 and S9+ in the US will get FM radio support in the next update - SamMobile
Amazon.com: Bluetooth Radio FM Transmitter for Car with Charger Audio Receiver Cigarette Lighter Adapter Music Player Hands Free Car Kit for iPhone Samsung Android Cell Phones : Electronics
How to use radio on Samsung Galaxy S9
Samsung Galaxy S9+ S9 Plus G965u G965u1 6gb Ram 64gb Rom Octa Core 6.2" Nfc Snapdragon 845 Fingerprint Mobile Phone - Mobile Phones - AliExpress
Samsung Galaxy S9 Plus review | 252 facts and highlights
FM Radio Apps? : r/GalaxyS9
How to unlock bootloader of Galaxy S9/S9+ (Snapdragon) - GoAndroid