I have enjoyed using Nextradio app for last 1-1/2 yrs for live local FM radio (NPR!) - wired ear buds act as an antenna so I can listen anywhere. Has not worked since last big update on phone in late January 2021. Nextradio app now says "FM Radio is Unavailable" - "...Next Radio doesn't have access to the FM radio receiver in your device. Let your wireless carrier know that you'd like to listen to free FM radio on your phone..." I uninstalled and reinstalled the app, thinking it might have updated as well, but no luck. Today a super nice VZ Tier 2 Tech Support guy helped me but it's not something he could "fix" - appears this combo (Samsung S10 & Nextradio) isn't supported anymore. Anyone know a work-around or do I need to buy myself a mini-FM radio with headphones?
Have you tried contacting the app developer? You can usually find their contact info on the app page. See a lot of complaints on the app page about it not working anymore.