The iPhone has the do not disturb setting that you can schedule. So my phone quits alerting me to messages at 10pm and doesn’t resume until 9am. No lights, no buzzing - nothing. Those people you have in favorites (ie your kids) are the only calls that can get through. Get to this setting from Settings then on the first page scroll down to Do Not Disturb, click and turn on scheduled and choose your hours. Best setting ever!