I had tried that already. You can't control the volume when the phone is locked or if you are in any app except the Sonos app. You have to either open the app or use the pull down notification which requires an additional tap to get to the volume control.
I'm sending this thing back. That is a serious usability flaw in my mind. Bose allows total control from a locked device. I can even move to the next song from the lock screen. When someone walks in the room and asks me a question I should be able to pick up my phone and turn down the volume from the buttons on the side of my phone. Having to unlock and navigate to a special control is ridiculous.
It's too bad. The sound is decent.
It must be a limitation on your phone. I can control the volume when my iPhone is locked.
Yea, it could be whatever version of android phone you could be using. It could also be that Sonos app isn’t running in the backgroud, or some other app has the focus and control of your hard volume buttons. If you still have Bose app running for example, that could be taking the focus.
“Hey Sonos” (SVC) isn’t an option as OP’s profile says they are using GA, and Google won’t allow their assistant to be on the same device with other voice services. GA would work, but if using voice control isn’t an option, then I imagine walking over to the speaker and pressing the hard buttons isn’t either.
Assuming you aren’t trying to control volume while in bluetooth mode.