Connect a bluetooth audio device (headset, speakers) to the ubuntu phone.
Play music/enter into a call, so that you have active audio to the device.
Adjust the volume, using the UI or keys on the ubuntu phone.
The volume of the bluetooth headset changes (good) but the ui contains no clue that this is what the phone is doing (less good). On other devices the volume indicator changes to provide visual feedback that the bluetooth device volume is being set.
Connect a bluetooth audio device (headset, speakers) to the ubuntu phone.
Play music/enter into a call, so that you have active audio to the device.
Adjust the volume, using the UI or keys on the ubuntu phone.
The volume of the bluetooth headset changes (good) but the ui contains no clue that this is what the phone is doing (less good). On other devices the volume indicator changes to provide visual feedback that the bluetooth device volume is being set.