Have you noticed a Moon Icon beside the clock of your Ipad or Iphone, and you have no idea what is it for?
The Moon Icon actually indicates that you are in a Do Not Disturb Mode. When it is enabled, a moon icon will be displayed on the status bar and incoming Facetime calls or alerts will be silenced.
How do you turn off the Do Not Disturb Mode?
Note: This tutorial is applicable for iOS 7.