If you were hoping for more collaboration between music streaming rivals now that Apple Music playlists can transfer over to YouTube Music, you might have to keep waiting. Apple has recently discontinued the technology that allowed iPhone users to control the volume of devices playing music through Spotify Connect using their phone's physical volume buttons.
This information comes from an update on Spotify's support page. While Spotify states they are working "with [Apple] on a solution," there is already a workaround. When using Spotify Connect to play music on your smart TV, computer, smart speaker, or other devices, pressing your iPhone's volume button within the Spotify app will bring up a volume slider that allows you to make the necessary adjustments.
