Sometimes when using Spotify, I have no sound and the volume buttons on the side of my Z5 compact do not activate the mediavolume. Instead they activate the ringtone volume. If I then open the volume menu and raise the media volume the actual volume still doesn't go up. I only have this problem when using Spotify. If I open another app like youtube for instance the volume works properly. If I restart my phone the volume problem in Spotify disappears. But after a while I find myself having the same problem again..
