I have been paying for and using Spotify now for a few months on my Samsung Galaxy S4. I know that as it is a streaming service that it will use up a large amount of data usage for each month of my phone plan. In previous months I can say that it has used up around 3/4 of my 1 Mbyte plan. Last Friday my phone plan data restarted so I decided to listen to Spotify on the way home on the train. When I got home I got a message from my telephone company that I had used over 50% of my data usage for the month. I was thinking that this was impossible and that they were incorrect. When I looked at the Data Usage area under the Android Settings I found that the phone had recorded data usage for Spotify of 680 Mbytes. My train journey was only 20 - 30 minuts and Spotify had already used up this amount of data. How can this be? Can someone please shed some light on what may have happened here? If I don't get this resolved I will be forced to cancel my subscription to Spotify or just use it offline. This will be a shame as I think it is a good service. Just to note that I have not downloaded any of my playlists during this time.