This issue only started on my S9 once I installed Android Pie update. My Spotify controls on both the lock screen and my watch running Google Wear stopped working. You csn tell the tap works but nothing happens. Skipping to the next dong did not happen. The above suggestion did not help. My battery optimization was set off for all apps. I logged out and logged back in but still same issue. But... I SOLVED IT. At least for me. The lock screen settings only refers to Music generically. I uninstalled Google Play and Spotify vontrols on lock screen now works. Conflict between Google Play snd Spotify??
... View more