Several apps, such as by San Valmout, claim to offer wireless FM radio capabilities. However, modern "wireless" FM radio is often a mix of hardware-dependent tuning and internet streaming, as most smartphones lack the internal antenna traditionally provided by wired headphones. Top Wireless & Offline-Capable Radio Apps
: A free-to-use option on the iOS App Store for basic FM features. How "Wireless" FM Radio Works
Turn Any Android Smartphone Into an FM Radio - Mini SDR Review
: Provides access to both local FM frequencies and digital internet stations.