If you had to get up early on January 1st, I hope you used the built-in Clock app to set your iOS alarm; otherwise you may have spent an unintentional extra few hours in bed. Why? Because the Do Not Disturb feature of iOS 6 switched on as usual on the last day of 2012, and then stayed on.
Many users of Do Not Disturb report that the feature didn’t switch itself off yesterday morning.
I noticed this, too, and until I read the tweets and posts from others, I figured I had “knocked” the switch into the “on” position whilst messing with the nearby tethering settings.
But no. The little crescent-moon symbol in the status bar stayed there on both my iPhone 5 and my iPad. In fact, it’s still there on my iPad, and if I go into the Settings app the toggle switch tells me that Do Not Disturb is indeed switched on.
Oddly, I’m still seeing and hearing some but not all of my alerts.
Either way, you just need to go switch it off and everything goes back to normal. Still, this is a good warning that relying on third-party alarm apps might not be a great idea if you have a plane to catch.