Do Not Disturb does not block alarms on most phones

When you turn on Do Not Disturb, your phone silences calls, texts, and notifications — but alarms keep ringing. This is true on iPhones, Android phones, and most other devices. The alarm app runs on a separate system from notifications, so Do Not Disturb cannot touch it.

The reason is practical: an alarm is something you set deliberately for a specific time, usually because you need to wake up or remember something important. If Do Not Disturb could silence alarms, you might sleep through your alarm and miss work or an appointment. Phone makers decided alarms should always sound, even when you want the rest of your phone quiet.

Key Takeaways

  • Do Not Disturb silences notifications and calls but leaves alarms running on iPhones, Android phones, and most other devices.
  • Alarms use a separate audio channel that Do Not Disturb cannot control, so they sound even when your phone is in silent mode.
  • If you want to silence an alarm, you must turn it off in the Clock or Alarms app rather than relying on Do Not Disturb.
  • Some phones let you schedule Do Not Disturb to turn on and off automatically, but this does not affect alarms that are set for those times.

How Do Not Disturb affects different types of sounds

Do Not Disturb has a hierarchy of what it blocks. At the top are notifications from apps — messages, social media alerts, news updates. Below that are phone calls and text message notifications. Alarms, timers, and reminders from the Clock app sit outside this system entirely.

The same goes for sounds from other critical apps. If you have a medication reminder set in a health app, or a timer running in the kitchen, Do Not Disturb will not silence those either. The idea is that you set these things because you need them, so the phone respects that choice even when you have asked for quiet.

One exception: some phones let you set Do Not Disturb to allow calls or messages from specific people — your family, your boss, your emergency contacts. But this is about letting certain notifications through, not about blocking alarms.

What happens to alarms when your phone is on silent

Silent mode and Do Not Disturb are different things, though people often confuse them. Silent mode (the physical mute switch on iPhones, or the volume buttons on Android) turns off the ringer for calls and notifications. Alarms still sound in silent mode.

Do Not Disturb is a software setting that lives in your phone's settings menu. It does the same job as silent mode — it quiets notifications and calls — but it also lets you set schedules and exceptions. Again, alarms are not affected.

If you want to silence an alarm, you have to go into the Clock app and turn it off, or delete it. There is no setting that will make Do Not Disturb block alarms, because the phone manufacturers built it that way on purpose.

Turning off alarms without using Do Not Disturb

To stop an alarm from sounding, open the Clock app on your phone. On iPhones, this is called the Clock app. On Android, it is usually called Clock or Alarms. Find the alarm you want to turn off and tap the toggle next to it. The alarm will no longer ring at that time.

If you want to delete the alarm entirely, look for a delete or trash icon next to the alarm name. On iPhones, you can swipe left on the alarm to reveal a delete button. On Android phones, long-press the alarm and look for a delete option in the menu that appears.

If you want to keep the alarm but change the time it rings, tap on the alarm to edit it. You can change the hour and minute, choose which days it repeats, and pick a different sound. These changes take effect the next time the alarm is set to ring.

Scheduling Do Not Disturb to turn on automatically

Most phones let you set Do Not Disturb to turn on and off on a schedule. On iPhones, go to Settings > Focus > Do Not Disturb, then tap "Add Schedule". You can choose a time range — for example, 10 p.m. to 7 a.m. — and Do Not Disturb will activate automatically at those times.

On Android, the process varies by phone maker. On Google Pixel phones, go to Settings > Notifications > Do Not Disturb, then tap "Schedule". You can set a start time and end time, and the phone will turn Do Not Disturb on and off automatically.

Even with a schedule set, alarms will still ring during those hours. If you have an alarm set for 6:30 a.m. and Do Not Disturb is scheduled from 10 p.m. to 7 a.m., the alarm will sound at 6:30 a.m. as planned. The schedule only affects notifications and calls, not alarms.

Why phone makers designed it this way

Alarms are treated differently from other notifications because they serve a different purpose. A text message or a social media alert is something you can read later. An alarm is time-sensitive — it is meant to interrupt you at a specific moment because something important is happening then.

If Do Not Disturb could block alarms, someone might turn on Do Not Disturb before bed, forget about an alarm set for the morning, and oversleep. Or a parent might turn on Do Not Disturb during a meeting and miss an alarm set to pick up their child. Phone makers decided the risk was too high.

This design choice is consistent across nearly all smartphones. Whether you use an iPhone, a Samsung, a Google Pixel, or another Android phone, alarms will sound even when Do Not Disturb is on. It is one of the few things that Do Not Disturb cannot control.

Frequently Asked Questions

Can I make Do Not Disturb block alarms?

No. There is no setting that lets you make Do Not Disturb block alarms. Alarms are designed to sound regardless of Do Not Disturb status. If you want to stop an alarm from ringing, you must turn it off in the Clock app.

Will my alarm go off if my phone is in Do Not Disturb mode?

Yes. Do Not Disturb does not affect alarms. Your alarm will ring at the scheduled time even if Do Not Disturb is on. The only way to prevent it is to delete the alarm or turn it off in the Clock app.

What is the difference between Do Not Disturb and silent mode?

Silent mode uses the physical mute switch (iPhone) or volume buttons (Android) to turn off the ringer. Do Not Disturb is a software setting in your phone's settings menu that silences notifications and calls. Both leave alarms unaffected.

If I schedule Do Not Disturb for bedtime, will my morning alarm still ring?

Yes. Scheduling Do Not Disturb does not block alarms. If you set Do Not Disturb to run from 10 p.m. to 7 a.m. and have an alarm set for 6:30 a.m., the alarm will sound as scheduled.