I've got an Samsung Galaxy s6 with spotify Premium. When i'm listening to my offline playlist the music stops. It stops for short amount of times like half a second. Sometimes I can listen for 30 minutes and there is no problem. I've tried to reinstall, restart phone and also tried to play the music without battery save mode on. The problem is worse when my phone is in stand by mode.The problem is just with the spotify app, not with the speaker.