Disable cellular data for specific apps on iOS 7
I'm running iOS 7 on an iPhone 4S. In the Cellular menu under Settings, I can supposedly turn off the use of cellular data for specific apps. I tried turning off a number of them, however, when I exit and re-enter the Cellular menu, all apps are turned back on to "enable". Why is this happening? I've tried turning off my phone, turning it back on and I have tried doing a hard reset (power and home button).
iPhone 4S, iOS 7.0.2