Whenever I go to turn my data on only for a certain app, it turns most of them on. When I try to turn the data access off for certain apps, it just turns them on again when I exit out of settings. It's eating up my data like crazy. Also, most of the time when I turn the app's( the one that I want to use) data on and go to the app, it says that the app won't work because my cellular data is turned off, when it most definitely is turned on.