Q: do not disturb is not working

See Here...Using Do Not Disturb

http://support.apple.com/kb/HT5463

Also Perform a Reset...

Reset  ( No Data will be Lost )

Press and hold the Sleep/Wake button and the Home button at the same time for at least ten seconds, until the Apple logo appears. Release the Buttons.

http://support.apple.com/kb/ht1430

Hi,

same at my iPhone5 with iOS6 of course.

I have studied the settings well and allowed no exeptions.

Of cause I can see the moon symbol as well.

All calls will get through and rings.

Even when the caller suppresses his number.

And I performed a reset. Same issue.

Stupid me. Found it out. You need to set the device in locked mode with black screen. then it works. If the screen is switched on, the device think you are doing something and can also take a call.

Juergen on iMac wrote:

 

... You need to set the device in locked mode with black screen. then it works. ...

Thanks for posting your solution... Enjoy.

yep worked for me. thanks for your post