Earlier today I updated my iphone 5S to 8.0.2. A few hours later I went out for a 15 minute drive today, I used iTunes Radio to listen to some music. I noticed my phone was getting pretty hot -- I thought it was the GPS stuck on and it was draining things. Then a few minutes later I got a text saying I used 65% of my dataplan this month. Thought that was odd. A few minutes after that I got a text saying I used up 100% of my data! Whoa - so I immediately turned the phone off until I got back home and was on WiFi. Before the update I had deleted my music to make room for the update. Would it have started trying to pull it back when i fired up the iTunes app? I'd like to make sure I don't blow through another 1G next time I go out, but don't want to completely disable cell data either... Any suggestions?