Volume in app won’t stay where I set it

Are you using Spotify ‘Connect’ to link to your speaker rather than the Sonos App? - that’s the only thing I can think of here - it’s odd that your iPhones volume control keeps popping onto screen too from the left hand side? 

I’ve not been able to reproduce that here and your volume slider ‘granularity’ is completely different to what I see on my device. It seems to have a scale of 1-10 whereas mine displays a scale of 1-100. So probably something to do with the way Spotify is working on your device, perhaps?

It’s not showing a scale Of 1-10 I am just showing an example of trying to set a volume in that range, not sure where you are seeing that 10 is my max. And I agree it’s odd which  is exactly why I’ve opened the case here. 

Sorry I’m just trying to help you here, that’s all.. I thought the scale seemed different, but forgive me if that’s not the case.

So have you checked to see if Spotify ‘Connect’ is playing a role in your setup connection to the speaker?

Edit: The Spotify ‘Connect’ feature allows you to connect that app to speakers using either the Sonos API or Airplay2 etc.. so I’m just wondering if that’s the case? It might explain why your iDevice volume control keeps appearing on screen from the left hand side too - so that’s why I’m asking?

@aspain,
My thinking is you are ‘perhaps’ using different ‘competing’ volume controls from Spotify, and/or iOS, aswell as Sonos and if that is the case, just simply disconnect the speaker in Spotify Connect and/or from the iOS (Airplay) control centre and see if that resolves your issue.

Spotify automatically selects the speakers if I am first using them in sonos app and then open the Spotify app. So if I unselect them in the Spotify app it just stops the music altogether. It’s definitely a software issue and hasn’t always been this way. Appreciate your replies nonetheless 

Spotify should default to your iOS device - see screenshot below. 

So perhaps try switching/selecting your iOS device, as circled in red,  then try the Sonos App volume control and see if that fixes it.

yeah but as soon as you resume playing via the sonos app it will link spotify/the sonos speakers again automatically

Dunno then - mine definitely doesn’t do that?

As a simple example, I can play to my Sonos speaker from the Sonos App using either the installed Spotify service built into the Sonos App, (not the Spotify native App)  or I can use Sonos Radio, just as another example …and then also (at the same time) play different music to the iPad speakers using the native Spotify App.

Slightly old post, but adding my experience to this thread.  I was having exactly the same issue as the original poster.  Maybe our shared use case isn’t as common as I would have assumed, but I also use the Spotify to connect to Sonos speakers/groups and then largely control everything from spotify, as its interface is more robust, and music is streamed directly rather than being added to a static queue via the sonos initiated route.

Everything worked fine until a couple of months ago when I started having the same issues as the original poster.  Basically, changing the volume in the iOS app or the desktop app wouldn’t “stick”  and would automatically readjust a second later.  The issue seemed more pronounced and frustrating with grouped speakers, as changing one speaker’s volume would lead to all speakers’ volumes adjusting to new values a second or two after clicking or removing my finger.

I can confirm in my case that killing the spotify app on my phone makes the problem go away (spotify still running on PC, sonos still running on phone and PC).  Felt like that answer got lost in the conversation a bit, but that “fixed” it for me, and while that’s annoying and needs to be fixed, at least I’m no longer yelling at my speakers and insulting them personally for how much they cost and for disrespecting our 20 year friendship :).

I’m surprised this isn’t a more common use case (maybe because it doesn’t work reliably anymore :)).  Connecting from spotify allows more responsive control for the music, and I only need the sonos app to “rebalance” volume within a group.  When it worked, it was outstanding.

Do you still have the issue if you build the Group in a different order?

It’s possible that there is a slight communication lag. The first listed player in a Group is the Group’s “coordinator” and all music and control traffic passes through this unit. If the coordinator is struggling with it’s connectivity delays might contribute to your issue. This could explain why some users are experiencing his issue while others are not.