Syncing offline

[monicastrauss]

I just upgraded to spotify premium. I am trying to sync all of my music so that it is available to be played offline. However, after a few songs only, my phone comes up with a message saying "Download Error: Downloading has stopped becaue there's no space left on this device." I'm confused on what this means, and I want to be able to sync all of my music offline so I can listen to it with no wifi or data. I saw a solution to this for the android phones, but I couldn't find one for iPhones. Does anyone know what to do?