This icon means that your iPhone's Do Not Disturb feature is enabled. When Do Not Disturb is turned on, all of your phone calls will be sent straight to voicemail. While you'll still receive texts ...

You can disable the Do Not Disturb feature either by opening the Notification Center and clicking the Bell icon from the top-right section of the screen to turn off the Do Not Disturb mode or use ...

Select Control Center. Tap Customize Controls. Under More Controls, tap the plus sign next to Do Not Disturb While Driving. If the icon already appears under the Include heading at the top of the ...

2. Look for the icon that looks like a crescent moon - this is the Do Not Disturb icon. 3. The icon should be grayed out, but if it's illuminated white, this means that you have Do Not Disturb on.