The Galaxy S8 and S8+ feature you don't know about

The Galaxy S8 and S8+ have a lot to offer: long displays, curved edges, a convenient app drawer on the edge, and more. You can find all of these features if you spend enough time swiping through the apps and menus, but there's one you may not know about because there's no way to find it. What is it? We'll give you a hint — it offers totally free music, no data necessary.READ: Samsung Galaxy S8 Review: On the shoulders of giants

If you guessed that it is an FM tuner, you're right. The US version of both the S8 and S8+ feature an unlocked FM tuner that is ready to be used, but few users know about it due to the lack of an FM radio app. While FM tuners are still common in budget phones, they've become increasingly rare amongst the highest of the high-end consumer handsets.

Why Samsung decided to include an FM tuner with its US variants sans a related app to use the feature isn't clear, but doesn't really matter. You can utilize the tuner with any suitable Play Store app that supports terrestrial radio stations. The most popular FM radio app on Android is arguably Nextradio.

Nextradio offers some advanced features that make the FM radio option feel almost like a streaming music app, including a station guide that finds all your local stations and arranges them by name with related info. The app includes a basic tuner for navigating between station numbers, and also supports outputting audio through the device's speakers despite having earbuds plugged in (which are used as the radio antenna).

Why use FM radio in the days of on-demand streaming music? Unlike streaming apps, FM radio doesn't require any data and it doesn't come with any costs. You don't need an account. Fire up the radio app and any local free OTA music (plus sports broadcasts, local events, live DJ, etc.) are available on your phone immediately.