I'm getting weird behaviour from SpotifyPremium on my iPhone 5S (iOS version unknown). Upgraded to iOS 10.2 ...same behaviour.
AppStore says Spotify is current version (all Apps are current version).
A: Start Spotify... logo shows for a couple of seconds... menu shows for half a second... and Spotify appears to shut down!
B: Double-click the iPhone button and there appears to be a Spotify instance running in the background (playlist visible, Shuffle Play button visible), attempt to access this background instance: playlist goes full-screen for a second... logo replaces playlist... and Spotify appears to shut down. GOTO A or GOTO B and repeat as often as you like.
C: Delete Spotify background instance and confirm it is gone with another button double-click. GOTO A
Spotify on my MacAir works perfectly.
Spotify on Win10 started... switched to "installing Spotify ...then restarted Spotify and works perfectly.
Anyone have some suggestions???