Set Do Not Disturb During Bedtime on iPhone
You can turn on Do Not Disturb During Bedtime to help you sleep. It dims your display, silences calls, and sends overnight notifications to Notification Center until you unlock your iPhone in the morning.
Turn on Do Not Disturb During Bedtime
Go to Settings > Do Not Disturb.
Turn on Do Not Disturb, turn on Scheduled, then turn on Bedtime.
Tap From, then set the beginning and ending times for Bedtime.
During Bedtime hours, appears in the status bar.
Bedtime turns off automatically at the end of the quiet hours you specify. To turn it off sooner, tap the Do Not Disturb notification on the Lock screen, then tap Turn Off. When Bedtime is off, notifications resume.
To keep calls, text messages, and notifications from distracting you while you drive, turn on Do Not Disturb While Driving.