My Spotify has recently updated and my offline online toggle in the notification area of my phone no longer works. It will turn itself back online if I open spotify or just even reopen my notification area.
This used to work fine, I could have my Spotify constantly in offline mode and then if I wanted to switch online just swipe to my notification area and turn it back on or vice versa.
Screenshot attached of the notification tile I am referring to
We've talked with the right teams about this and we'll need to close this thread as 'Won't Fix'.
While the offline notification toggle functionality used to be available on certain devices, we cannot guarantee its functionality across all.
If you're having troubles using it or if it has disappeared for you, the best way to ensure that offline mode is enabled, is using the built-in option in the app.
We recommend doing this whenever you would like to stop Spotify from connecting to the internet and using data.