IOS 9 Cellular data usage restrictions don't work!! https://discussions.apple.com/message/28960476?ac_cid=tw123456
Anyone over here experiencing the same problem?
After updating to iOS 9, my issue is with the cellular data app toggle switches. For example, when a user turns a switch "on"from an "off" position, the setting is not respected by the system. The switch will appear to change to "on", but if you try to use the affected app, it won't permit cellular data to go through. Then, if you go back and check the cellular data app switches in the Settings app, you can see that the switch has reverted back to its previous position, in this case "off".
iPhone 5s, iOS 9.0.1, Model ME432NF/A