Bluetooth audio sharing in Android 15

Written on 04/28/2024
Taylor Bell


First look at an upcoming Android 15 "share audio" feature that may enable phones to broadcast audio the use of Bluetooth LE's Auracast feature, which means that you can share audio with multiple neighborhood instruments without delay.

  • Android 15 is adding a dedicated audio-sharing page that lets you listen in or start broadcasting audio, and we have an early look at the feature.
  • One of the most hyped features of the new Bluetooth LE Audio standard is Auracast, which enables broadcasting audio from one device to two or even more nearby devices.
  • Android has had basic support for Bluetooth LE Audio and Auracast since Android 13, but they’re set to be better supported in Android 15.
  • Android 15 is adding a dedicated audio-sharing page that lets you listen in or start broadcasting audio, and we have an early look at the feature.
  • One of the most hyped features of the new Bluetooth LE Audio standard is Auracast, which enables broadcasting audio from one device to two or even more nearby devices.
  • Android has had basic support for Bluetooth LE Audio and Auracast since Android 13, but they’re set to be better supported in Android 15.

Bluetooth is not an option, as it is designed only to stream audio from a source device (such as a mobile phone) to a sink device (such as headphones). Fortunately, this is where the new Bluetooth LE audio standard and its Auracast feature come into play.

Auracast is a feature of the Bluetooth LE Audio standard that allows you to transmit audio to nearby devices over Bluetooth Low Energy. What's special about Auracast is that the device that broadcasts (e.g. your phone) doesn't need to be paired with the device that receives the broadcast (e.g. someone else's phone). Think of Auracast like your car radio. Rather than a giant radio tower transmitting audio data for miles to a receiver in your car, a small Bluetooth chip in another phone sends the audio stream to your phone for listening.

Some smartphone manufacturers have long offered audio sharing capabilities using Bluetooth. However, these proprietary implementations typically require a specific source device (as in the case of "Dual Audio" on Samsung Galaxy devices) or a specific sink device (as in the case of "Share Audio" on Apple iPhone devices). In contrast, Auracast is available on any audio device or platform that licenses and implements the technology from Bluetooth SIG, the industry consortium that defines the Bluetooth standard.

Unfortunately, very few devices on the market ship with Auracast support, even though this feature was announced in June 2022. But things are changing, and Bluetooth LE audio support has become something of a standard feature in new audio products. In anticipation of these upcoming releases, Google is adding a dedicated "Audio Sharing" page to Android 15, allowing users to search, connect, or start their own Auracast streams.