Why Does My iPhone Alarm Not Go Off?

Phone Alarm

When your iPhone’s alarm fails to go off, you’ll most likely oversleep, thus be late for work or miss an important meeting or deadline. This is the last thing as it could lead to serious repercussions, so it’s best to avoid such an issue in the first place. With that said, resolving the problem with your iPhone’s alarm not ringing isn’t a straightforward matter. 

Quick Answer

But before you can know the best solution, you must first understand why your iPhone’s alarm isn’t going off. This issue can be due to several reasons, including: 

– Low volume of the alarm sound. 
– Incorrect alarm time settings. 
– The bedtime feature is enabled. 
– You have more than one alarm clock app. 
– Bluetooth is switched on, and your headphones are connected.

These different causes are some of the reasons the alarm of your iPhone doesn’t ring as scheduled. 

Read on to better understand why this happens and know the best solution to take in such a situation. Let’s get started. 

Alarm Sound Set on Low

You might not have heard your alarm clock because your iPhone’s volume is low. This might happen if you accidentally click on your iPhone’s volume buttons on the side, leaving the screen only to display the Volume indicator. As a result, there’s a high likelihood that your iPhone alarm won’t be loud enough or will fail to go off altogether. 

Fortunately, you can easily remedy this issue by following some easy-to-follow steps, and these are: 

  1. Launch the “Settings” app. 
  2. Click on “Sounds and Haptics”
  3. Scroll down until you see “Ringer and Alerts”.  
  4. Slide the “Volume” level to make it louder

Pay close attention when increasing your iPhone’s alarm to ensure you aren’t increasing the media volume. 

Incorrect Alarm Time Settings

Another reason your alarm clock might fail to go off is incorrect alarm settings. When this happens, your iPhone alarm clock won’t go off at the expected time and instead ends up ringing at a different period. This issue happens because of not setting up the correct day or time on your alarm clock, most likely due to mixing up AM and PM. 

You can easily resolve this issue by following these steps: 

  1. Launch the “Clock” app. 
  2. Tap on the “Alarm” section. 
  3. Click “Edit”
  4. Open “Repeat Settings”
  5. Check the set date and time to know what necessary changes to make. 
  6. Click on  “Save”

After making these changes, you can be certain that your alarm clock will go off at the right time of day. 

You Have More Than One Alarm Clock App

Installing third-party alarm apps on your iPhone is also responsible for your alarm not ringing on time. This happens because third-party apps usually aren’t perfectly integrated with the ones pre-installed with your iPhone. Because of this, you’ll be forced to leave your iPhone’s alarm app open to be sure it’ll ring and adjust the alarm sound using the system volume. 

You can best address this issue by uninstalling the third-party alarm clock from your iPhone by following these steps: 

  1. Go to your iPhone’s “Home Screen”
  2. Locate the third-party alarm app. 
  3. Tap and continue pressing on this third-party alarm app. 
  4. On the pop-up window, uninstall this app by clicking on the option “Remove App” > “Delete App” > “Delete”

After uninstalling this third-party alarm app, the issue of your iPhone’s alarm not going off will be resolved.

The Bedtime Feature Is Enabled

The “Bedtime” feature is handy as it allows you to set your iPhone to sleep mode and notify you when it wakes up. If you set the “Bedtime” feature at the same time as your alarm, this creates a conflict. As a result, this confuses your iPhone, and it won’t produce any sound. 

You should resolve this by either altering your regular alarm or switching the time for “Bedtime”. Alternatively, you can disable the “Bedtime” feature by following these steps: 

  1. Launch the “Clock” app. 
  2. Click on Bedtime
  3. Toggle it to disable the “Bedtime” feature. 

Bluetooth Is Switched On, and Your Headphones Are Connected 

iPhones are ideally designed to sound the alarm through their speakers rather than any headphones or gadgets connected via Bluetooth. Nonetheless, this isn’t always guaranteed and might happen either due to erratic behavior by your smartphone or a software bug. As a result, the alarm sound comes out of the Bluetooth-connected headphones or devices. 

This is an issue you need to resolve and can do this by: 

  1. Go the “Settings”
  2. Click on “Bluetooth” to switch it off

Once you do this, the alarm app will work perfectly fine the next time you schedule it to alert you. 


Most people use their iPhones as their alarm clock rather than the traditional alarm clock. However, one issue with this is your iPhone’s alarm can sometimes fail to go off. As a result, you end up dealing with consequences you’d better stay clear off. 

If you’ve experienced such a problem before and wondered about the cause, this guide has detailed why your iPhone’s alarm might have failed to go off. With this in mind, you’re better placed to know how you can prevent such an issue from repeating itself in the future. Therefore, you’ll no longer find yourself in sticky situations that you’d best avoid. 

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