But you should still check the ringer volume and the alarm ringtone.

Does Silent Mode Mute Alarms?

The silent mode does not mute alarms.

iOS Alarm Settings for Volume with Ringer and Alerts highlighted

Toggle theChange with Buttonsswitch to set the volume with the physical volume buttons on the side of the iPhone.

Open theClockapp to check the ringtone for the alarm.

Tap the alarm you want to check for the ringtone or selectEditon the top-left of the screen.

iOS Alarm Sound Check confirming not set to None

Tap onSoundand confirm that the alarm sound isn’t set toNone.

Tap on an existing alarm or choose the “+” icon to set up a new alarm.

Do Alarms Go Off on DND?

Choosing an alarm in the Clock app on an Android phone

Androids allow for more customization than iOS.

When you set upDo Not Disturb on Android, it’s possible for you to optionally turn off alarms.

Android phones also allow the alarm to override the end time for DND.

Alarm sound volume in an Android and Vibrate for Alarm setting

When you set upDo Not Disturb on iPhones, the alarm will go off at the appointed time.

FAQ

Your phone alarm will typically use your system volume.

Problems with your phone alarmcan come from a variety of sources.

Otherwise, power cycle your phone, check for a software update, or try a different alarm sound.