1. You can set sounds for incoming calls as well as text messages, emails, voicemails, calendar alerts, reminders, social media updates, and more. To change sound settings from the home screen, tap Settings.
   
2. Tap Sounds.
   
3. To set your device to silent, toggle the Ring/Silent switch on the side of your iPhone.
   Note: You'll still hear clock alarms, audio playback in your music, podcasts, videos, and games.
   
4. To silence calls, alerts, and notifications, use Settings > Do Not Disturb.
   Note: Learn more from Apple support articles: Use Do Not Disturb on iPhone and Change sounds, ringtones, and alerts on your iPhone