What is the difference between Quiet Hours and Mute Alerts?
Quiet Hours is for when you want to use the low battery and full battery alarms, but you already know there is a range of hours during the day or night when you don't want the alarms going off. For example, when you are normally sleeping, or when you will be at work or in the classroom.
Mute alerts are for those times that aren't planned, but that you still don't want your alarms going off while you are busy doing something else. Examples could be church, at a funeral, during dinner, or just a simple case of telling your alarm to wait until the movie or television show you are watching is over. The default is to mute the alarm for one hour, but you have enormous flexibility as you can mute the alarms for 12 hours, one hour or even 15 minutes at a time. The display then tells you exactly until what time the alarms will be muted.