Apple has posted a support document that telsl users that a bug with the “Do Not Disturb” feature in iOS 6 will automatically be resolved after Jan. 7.
The problem began with the debut of 2013. The Do Not Disturb mode in iOS 6 stays on past its scheduled end time.
“Do Not Disturb scheduling feature will resume normal functionality after January 7, 2013,” says Apple. “Before this date, you should manually turn the Do Not Disturb feature on or off.”