Android’s new Gabeldorsche Bluetooth stack is enabled by default in Android 13

Android’s new Gabeldorsche Bluetooth stack is enabled by default in Android 13

But only "up to the scanning layer"

For the longest time, Android has relied on the “Fluoride” stack for all Bluetooth functionality. But Google started testing a new Bluetooth stack called “Gabeldorsche” with Android 11. Shortly after it rolled out the first Android 11 stable builds to Pixel devices, we spotted a new developer option in the release titled Enable Gabeldorsche, which helped developers test the new Bluetooth stack. The option was present in all Android 12 and Android 12L releases, and it was also included in early developer previews of Android 13. However, Google removed it in the second Android 13 beta release. That’s because Google has enabled the Gabeldorsche Bluetooth stack by default in Android 13.


For the unaware, a Bluetooth stack is the software responsible for handling Bluetooth connections. As mentioned previously, Android has used the Fluoride Bluetooth stack for all Bluetooth functionality for several years. But now, after years of testing, Google has replaced it with the new Gabeldorsche Bluetooth stack for certain functions. The Gabeldorsche Bluetooth stack is a complete rewrite of Android’s Bluetooth stack, and it is enabled by default in Android 13, but only “up to the scanning layer.”

According to Esper’s Mishaal Rahman, Android 13 will utilize the Gabeldorsche Bluetooth stack for “BLE scanning, BLE advertising, ACL connection management, controller information management, HCI layer, HAL interface layer, and other required components like config storage.”

Although Google has not officially announced this change for Android 13, the company highlighted it as part of the Connectivity updates in Android Automotive 13. Upon further investigation, Rahman found that the Gabeldorsche stack also seems to be live for Android 13.

Google aims to improve Bluetooth security, reliability, interoperability, and automated end-to-end testing with Gabeldorsche. It is not clear how much of a benefit it will bring to end-users at the moment, but it might result in lower latency and some stability improvements.

Via: Esper

About author

Pranob Mehrotra
Pranob Mehrotra

A Literature and Linguistics graduate with a keen interest in everything Android. When not writing about tech, Pranob spends most of his time either playing League of Legends or lurking on Reddit.

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