https://www.techradar.com/news/this-android-p-feature-will-remember-your-preferred-bluetooth-volume

Android P is shaping up to deliver some truly useful additions, and it’s still early in its developer preview. The latest feature to be implemented is a smart volume control, of sorts, that remembers the volume settings of each Bluetooth device logged to your phone.

For as smart as phones and tablets have become, something like this fills in one of the few remaining “dumb” parts by playing your music, podcasts, what have you, at a volume neither too high or low to infuriate you.