Fast Pair Known Issues

This section lists the Fast Pair compatible known issues

Legacy Android Bluetooth Stack Issues on Android 15 and Before with Fast Pair LE Audio

This section covers legacy Android Bluetooth stack backward compatibility issues with Fast PAir LE Audio specification, tools, and integration testing.

The LE Audio headset with CTKD BREDR to LE enabled is unable to successfully Fast Pair with Android 12 Bluetooth stack Pixel phones

This section covers a known limitation in the Android 12 Bluetooth stack with headset supporting the CTKD from BREDR to LE capability

Affected Devices/Conditions:

  • Provider: LE Audio headsets with CTKD BREDR to LE enabled.
  • Seeker: Android 12 Pixel devices.

Symptom:

  • BREDR discovered services were overridden by the LE discovered services (which contains no audio profiles)
  • After Fast Pair initial pairing succeeds, but there will be no audio profile connected.

Mitigation plan for Manufacturing Partners:

  • Disable the CTKD BREDR to LE direction on the headset (Provider).
  • Partners may also seek a waiver for the Android 12 LAB certification test if disabling CTKD BREDR to LE is not feasible for their product.
  • Collaborate with the third-party lab to identify this symptom using bugreport log patten and video or screenshot.
  • The fix for this symptoms is included in the Android 16 update. Therefore, once a user upgrades their device to that version, the issues will be permanently resolved.

Known limitation in the Android 15 Bluetooth stack

This section covers a known limitation in the Android 15 Bluetooth stack.

Affected Devices/Conditions:

  • Provider: LE Audio headsets performing subsequent pairing using RPA.
  • Seeker: Android 15 devices.

Symptom:

  • For devices bonded with RPA, other application call the BluetoothDevice#fetchUuidsWithSdp() API will do a fresh service discovery on LE-GATT only, making previously discovered SDP UUIDs be overridden.

Mitigation plan:

  • Short-term: The Google Pixel Buds application will release a fix to prevent the UUIDs from being overridden in June 2025.
  • Long-term: Android Bluetooth is expected to deliver a AOSP Bluetooth stack solution in Q2 2025 in Android 16 with separate_service_storage flag rollout.