"Hey Siri, play radio station [station name]." As reported by 9to5Mac, the feature is in its early deployment stages, so Siri may sometimes revert to Apple Music searches, if you just say the name of the station and don't specify that it is a radio station. That's something that should be ironed out by the final release of iOS 13 this fall.Apple is reportedly tapping into TuneIn, iHeartRadio and Radio.com to source online streams. To start playing radio, users can say something like,
Aside from being integrated with Siri, radio playback is also controllable through the Apple Music app, while the app's search tab can now be used to look up radio stations. Your last stations will also appear under "Recently Played" in the Music app.
It's not clear if the grand total of 100,000 stations is available yet, but the feature is currently going live for iPhones and iPads running the iOS 13 beta, as well as the HomePod on its current software. The roll-out has began in some parts of Europe, including Germany and the UK.