I have my iPhone 5 set to iOS 7 and within the settings I have configured do not disturb to work when the phone is either locked or unlocked. I've tested this and the phone still rings when it is unlocked. Is this happening to anyone else? How do I go about fixing this? I really need/want that option to work as I don't want to receive calls first thing in the morning but would still like to be able to check my email and such without having to use airplane mode and wifi turned on. Please advise, thank you.