Ah I never felt inspired to use it on a computer and always use physical volume controls in the car and through headphones, so I wouldn’t have run into that. It does seem like something that should be a day-one sort of feature.

"First you have to unlock your iphone"

(╯°□°）╯︵ ┻━┻

I swear I've gotten that response, from a nearby HomePod, while holding my unlocked iPhone in my hands.

I don't know what it is doing sometimes.