"Do not Disturb" feature is not working with iOS6 update in iPhone4

Make sure your screen is locked - only then the feature works.

mine is not working either even with screen locked.

its working fine with notification alerts for whatsapp and facebook but not for calls

You have to go into Notifications under the Do Not Disturb button. Apple automatically enables your favorite list to get through. Change it to no one. That should work.

thanks but i already tried that by selecting NO ONE but phone still rings.

I have an iphone 4 and my Do Not Disturb features isn't working either. Still getting calls when notifications is set to NO ONE. :- / I am guessing it's an iphone 4 bug.

i've been trying to get this feature to work since last night and i couldnt. a few minutes ago, it worked twice then its back to not working.

i didnt do anything but the feature seems to be working now. my phone is on screen lock. called it a few times and calls went to my ovicemail. some glitch.. i guess. just keep on trying.

Just make sure your iphone went dark. Only locked status wont enable the feature.

When I first tested the Do Not Disturb function, I discovered two ways it could seem like it was not working. One, as mentioned above, was that my screen was not locked. The other was the settings under Settings/Notifications/Do Not Disturb. If your settings allow calls from favorites and then you try to test the feature from a phone in your favorites list, it will not block the call. Similarly, if you are testing multiple times and the allow repeated call option is set, the call will also get through.

And one other observation. All of the material I have seen describes the action of the Do Not Disturb function as silencing the notifications. For incoming calls it does more than that; it actually rejects the call so the caller goes straight to voicemail rather than just ringing silently.