I currently have a spotify premium account the last few months and I have noticed nothing but problems with the spotify app on windows phone. The app doesnt even work anymore for me, it worked for a day or two and never worked again. I have reinstalled the app many of times and it still doesnt seem to want to work.

The app itself will only work on wifi and wont work when using 3G mobile internet so its basically no use to me when I am out and about. I had downloaded a few playlists to listen to offline when I had no wifi acess but all the app keeps saying is that the playlists are not available offline even though I had downloaded them onto my phone for offline use. The app itself  when connected to wifi says I am offline and wont let me listen to any music or go onto any playlists. The spotify app for windows phone is just terrible compared to the IOS version. The IOS version supports 3G mobile internet and has much more features such as radio (which I normally use on my desktop) and the app itself on IOS is just simply more easier and much better designed. Its also like the windows phone app took you's 10 mins to create. 

I honestly dont see the point in me paying for the Spotify premium if I cannot use it on my phone. If you's dont decide to sort out the windows phone app I may aswell just get the spotify unlimted for my desktop cause I dont see the point of paying an extra 5 euro to use it on my phone if it simply doesnt work.