iPhone Alarm Not Going Off? Here's the Fix! (2022)

How do you fix an iPhone alarm that doesn't work? We'll go over why the alarm you set didn't go off and how to fix it.

Why is my alarm not going off?! When you set an alarm on an iPhone, you need it to work. If your iPhone alarm doesn't go off, here's why and how to fix it.

Related: Watch Alarm Not Working Fixed: How to Set Alarm on Apple Watch (watchOS 9)

When you set an alarm on an iPhone, you expect it to work, and if it doesn't, it's a major problem.

Does Focus mode or Do Not Disturb silence alarms? No, Do Not Disturb doesn't silence your iPhone alarms. So, if that's not the problem, let's find out what is. We'll go over why your alarm sound is not going off, and how to get your alarms working again. For more great iPhone tutorials, check out our free Tip of the Day.  

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Check the iPhone Alarm Volume 

The first thing to check when your iPhone alarm is not going off is the volume on your iPhone. This is because the alarm volume matches the overall volume set for your iPhone. To check this:

  1. Open the Control Center, then swipe up on the volume slider to raise the volume on your iPhone. 

    how to turn up volume on iphone
  2. You can also press the Volume up button on your iPhone to increase the iPhone alarm volume.

    iphone volume buttons

If the volume levels still aren't loud enough for you, it's possible to boost the volume on your iPhone

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Make Sure the Alarm Is Accurate 

It's possible that your iPhone alarm is not going off because you've set it wrong. I know this sounds obvious, but it's a mistake lots of us make! I've been sure that I set an alarm for my daughter's school pick-up time, only to get jolted out of bed at 3:20 AM because I mis-scrolled from PM to AM. You can also delete all your alarms and remake them while you're here, which has helped some people with the silent alarm problem. To check for human error:

  1. Open the Clock app.

    iphone clock app
  2. Tap Alarm at the bottom of the screen, then make sure that you've set the correct time for each alarm, including AM or PM, and that the alarms are toggled on (the toggle will be green).

    Tap Alarms
  3. You can also tap each individual alarm, then tap Repeat.

    set frequency of iphone alarm sound
  4. You can decide how often you want the alarm to repeat so you don't miss any days or get unnecessary alarms. 

    decide how often iphone alarm repeats

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Disconnect from External Speakers

If you connect wired headphones, Bluetooth headphones, or speakers to your iPhone, your alarm will play through the connected device. If you don’t hear the alarm sound while connected to these devices, disconnect from those devices and use the built-in speakers on your iPhone.

Reboot iPhone 

Turn it off and turn it on again! But really, when you reboot an iPhone, it can fix unresponsiveness and glitches on your iPhone and iPad. 

iOS Update 

Doing an iOS update is the solution to a lot of iPhone glitches and bugs, and the iPhone alarm not going off is no exception. So, update your device's iOS and see if your alarms start going off again!

Delete iPhone Sleep Schedule 

Apple's sleep reminder and tracking feature can interfere with alarm sounds, especially if it's set to the same time as your iPhone alarm. You can find your Sleep settings in the Health app, where you can either delete them or change your wake time.

  1. Open the Health app.

    iphone health app
  2. Tap Sleep.

    iphone sleep settings in health app
  3. Scroll down a bit and tap Full Schedule & Options

    See full schedule
  4. Tap Edit.

    tap edit to change iphone bedtime settings
  5. Move the Wake Up icon to change your wake-up time a bit, then tap Done

    touch and hold the bell icon to change sleep time
  6. Or, scroll down the page a little and tap Delete Schedule

    delete iphone bedtime settings

Pro-Tip: Third-party clock or alarm apps can also interfere with Apple's Clock app. Try deleting any of these apps you've downloaded to see if your iPhone alarms start ringing again.

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Restore to Factory Settings 

This is a drastic step to take, and it's the last thing you should try if your iPhone alarms still aren't working. When you restore an iPhone to factory settings, all your data and settings are deleted. This can get rid of glitches, but you'll have to back up your iPhone to iCloud first, so you don't lose your data. After you've done this, you can restore your iPhone from your iCloud backup

Contact Apple Support 

If all else fails, your last resort may be to contact Apple Support or visit the Apple Repair page to find an authorized service provider or see other repair options. We hope that you will have found a fix in this article before you get to this point. If you have other tricks that have fixed your problems with an iPhone alarm not going off, let us know in the comments.

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Author Details

Leanne Hays's picture

Author Details

Leanne Hays

Leanne Hays is a Feature Writer at iPhone Life, and has written hundreds of in-depth how-to and troubleshooting articles. She's a former Associate Editor for iPhone Life magazine, and has written for the Iowa Source, as well as web content for education marketing. Leanne has an associate's degree in education, with a focus on curriculum development, as well as a bachelor's degree in science. She has over nine years of experience with SEO, social media management, and web development and writing. Despite years of web work, Leanne is by no means an early adapter; she's only owned a smartphone for five years, which makes her highly sympathetic to the learning curve of new iPhone owners. She enjoys making reader's lives easier and putting her education experience to work by walking them through the most practical ways to use Apple devices, step-by-step.

In off-work hours, Leanne is a mother of two, homesteader, audiobook fanatic, musician, and learning enthusiast.