I have all the boxes checked off in the music app to stop music information from loading. Since last night 400 mgb of data have loaded, thankfully over wifi. I'm not streaming or downloading anything. Not even using the music player. I use Power Amp to play music. When I get away from wifi this thing is still sucking data through the cell connection. I haven't streamed any music or video, hardly used LTE/3G and data use is at 650mgb. I'm pretty sure the music app is responsible. I have no idea why this app is requiring all this data or how to stop it. I've just turned on the data saver to see it that helps.