Many iPhone owners woke up on New Years Day and their scheduled “Do Not Disturb” feature remained on. This happened to me too. I missed a few important phone calls because of this flaw. Interestingly enough Apple just aired a new commercial that shows the benefit of the “Do Not Disturb” feature starring tennis stars Venus and Serena Williams.
The ad points out that the viewer may miss out on an awesome dream without the Do Not Disturb feature. The Do Not Disturb feature silences calls, alerts, and notifications.
It does not disable alarms that are set with Apple’s Clock application. To fix the issue, manually disable and re-enable the Do Not Disturb feature in the settings. Check out the commercial below: