You can conveniently set your phone to silent mode in Notifications or using the volume pop-up.
You can also enable silent mode in the Settings app.
How to enable silent mode
• By pressing the volume button in Notifications or in the volume pop-up, you can switch among ring, vibrate and silent.
• You can also change the sound settings in 'Settings> Sound & Vibrate.'
• 'Restrict Notifications Mode' has been renamed 'Do Not Disturb Mode.' Using this mode, you can block notifications and sounds from all or certain apps for the desired period of time.
• If you switch from 'Do Not Disturb Mode' to 'Selective Notifications,' alarms will sound. If you select 'Block all sounds,' alarms will also be blocked.