The half-moon icon on your iPhone means you've enabled Do Not Disturb, or muted a specific conversation in Messages. Here's what you need to know.

Under More Controls, tap the plus sign next to Do Not Disturb While Driving. On the Home screen, open the Control Center and tap the car icon to turn off or turn on Do Not Disturb While Driving. This ...

Distracted driving has been a problem since the first motorists slid behind steering wheels. Eating, smoking, talking to friends and flipping through radio stations have caused countless accidents ...