I don’t know if this is relevant, but I recently upgraded from an iPhone 8 and to an iPhone 12 and have yet to use my Sonos via my new phone because of the problem outlined below. I never had this problem with my old phone.

I have Spotify Premium. Both iOS and MacOS Spotify apps recognize my Sonos Play:1 but will not play through the Play:1 speakers. When I try to connect to the device from the Spotify apps, I get an endless “connection” animation but nothing happens. In MacOS, if I hover over the connection animation I see the message “Spotify is not active on this device”, meaning the Sonos speaker. In the Sonos 2 app (originally encountered this issue in the Sonos 1 app before thinking an upgrade to Sonos 2 would resolve the issue) I can see all of my Spotify songs, etc. I can log in to Spotify just fine. However, when I tap a song to play I get the following error message: “Unable to play nsong name]  - the connection to Spotify was lost.” It then skips to the next song and the same error message pops up ad infinitum. 

I have tried rebooting the speaker and my router several times, removing Spotify from the Sonos app and reconnecting it, and even a factory reset. Nothing works. I called Sonos customer service and he couldn’t resolve the issue through troubleshooting (which was basically what I had already done). He basically said Sonos could replace it if the speaker was within warranty, but it’s not as I bought this back in 2015. 

So now I’m stuck. I don’t think there’s anything wrong with the speaker itself. I know it’s kind of old but I’ve never had a problem with it until now. I can play music using other services within the Sonos app, just not Spotify. Anyone else encounter this and found a reliable solution?