My iPhone 5 with iOS 7 is using data for no reason. I have done everything I can think of to stop this.
Turn off your wifi, then reset your cellular network statistics, let it sit for 5 minutes, then go back to the cellular pane in settings and see whats using the connection
Here are my test results. This seemed like a good idea so I did it. I was extra thorough and did it for 2 hours. During the 2 hours I waited it did not stop at all.
Here is everything I have turned off.
Here is my usage.
I have turned off Background App Refresh. I have also closed all my apps.
What else can I try?