The Android bluetooth AVRCP profile v1.5 (released December 2020) doesn't seem to work with the OEM MIB (1?) of the 2015 GTI. The Next/Prev track controls stop working and appear greyed out (but Play/Pause was OK).
Solution for me was to downgrade my phone BT to AVRCP version to 1.4. On my Google Pixel 3 it was under Developer Options (once that menu is enabled).
Hope this saves someone a couple of hours of fiddling and googling.
Solution for me was to downgrade my phone BT to AVRCP version to 1.4. On my Google Pixel 3 it was under Developer Options (once that menu is enabled).
Hope this saves someone a couple of hours of fiddling and googling.