I use my old iphone3 with some loudspeaker dockinstation to listen music over radio apps but as well over my spotify app (premium account), which I have on my iphone 7S and also appears on my iphone3. Until last week it showed on my iphone 3 spotify all playlists etc which I had created under the iphone7 on spotify. However since a week I dont see the playlist anymore on my iphone 3 and if I choose a song from an album it plays but the sound gets off after a bit more than one minute??? I deinstalled the app on my iphone3 and reinstalled, but the same problem again:-(. Does anyone has a solution?