> Speaking of Bluetooth, can anyone ELI5 to me why bidirectional Bluetooth audio (sound/microphone, i.e. headset mode) works so much better on Android than on Linux (PulseAudio/Pipewire)? People keep telling me that bidirectional audio is always bad but on Android it seems way less bad and voices actually sound pretty natural. What magic codec are they using?

mSBC probably, which I don't believe is enabled by default in Pipewire currently. (I believe it is just a few lines of config to enable though)