15 Ways to Fix Calendar Alerts Not Working on iPhone (2024)

Apple Calendar app has got all the bases covered to be your go-to calendar. Whether you want to create a custom calendar, plan an event, or share a calendar with colleagues for collaboration, it’s got you covered. Moreover, you can also perfectly customize alerts to get timely notifications to ensure you never get late for a meeting. Speaking of notifications, a good number of users have recently complained that calendar alerts are not working on iPhone. If your iOS device has also encountered this frustrating issue, check out these 15 reliable tips to fix calendar alerts ill-functioning on iPhone.

Fix Calendar Alerts Not Working on iPhone and iPad

So, why is the Apple Calendar app ill-functioning? In most cases, this issue arises out of the wrong configuration of alerts. Hence, fixing this problem may help you overcome the hurdle. However, if the calendar app notifications still misbehave, you will have to resort to other solutions like rebooting and factory reset.

1. Make Sure Your iPhone is Not in the Silent Mode

To begin with, ensure that your iPhone is not in silent mode. Though it might sound funny to many, the silent mode might be creating confusion by not allowing notifications to ping. As a result, your calendar notifications might be getting lost in the pileup of alerts.

  • Note that when the mute switch is active, you will see an orange line above the switch (toward the screen). To turn it off, just push the switch toward the screen so that the orange line gets hidden.

2. Update Software on Your Device

Maybe your iOS is now bugged out which is preventing notifications from apps including Calendar. Now, you know it’s time to update your iOS.

  • Head over to the Settings app -> General -> Software Update -> Download and install the latest version of iPadOS/iOS.
Choose software update

3. Check for the Alert Tone Set in the Calendar App

Maybe, the alert tone that is set by you is not reaching your ears. In that case, you need to change the alert tone so that you are actually alerted. How to do that? Follow the steps below:

  • To do so, open the Settings app and then navigate directly to Notifications
Open Settings and Navigate to Notifiations copy
  • Then, select Calendar and tap on Sounds.
Tap on Calendar and select Sounds
  • Next, select the desired tone. This time, make sure to pick the one that sounds louder.
select the desired Calendar notification tone copy

4. Disable/Enable Calendar Sync with iCloud

If you are not getting calendar reminders on a specific iDevice, make sure you have enabled the iCloud sync.

  • Hop onto the Settings app of your iPhone -> Apple ID banner ->  
Hop on Settings and tap on your name copy
  • Tap on iCloud -> Show All option.
choose Show All
  • After that, turn on the toggle for Calendar and then quit the Settings.
turn on the toggle right next to Calendar

5. Make Sure You Have Perfectly Customized the Alerts of a Specific Event

The Apple Calendar app allows you to customize the alerts of specific calendars depending on your needs. So, make sure you have ideally fine-tuned the alerts.

On your iPhone or iPad, launch the Calendar app -> open the calendar in question -> tap on the Edit button.

  • After that, tap on Alert and then choose the preferred alert option.
  • Then, tap on the Second alert and select the desired frequency.

6. Ensure That Apple Calendar App Can Use Cellular Data

While customizing the Settings app on your iPhone, you might have accidentally disallowed the Calendar app to use your cellular data.

  • Head into the Settings app on your iPhone -> Cellular -> scroll down to find Calendar and then turn on the toggle for it.

7. Allow the Calendar App to Use Your Location

With the location access, it becomes a bit easier for the Calendar app to work properly and also send you real-time alerts.

  • Launch the Settings app on your iPhone -> Privacy & Security -> Location Services -> Calendar and then select While Using the App.
  • For a better experience, turn on the toggle for Precise Location as well.

8. Reconfiguring Calendar App Notification Settings Might Help

Another reliable solution that you should try to fix this issue is to reconfigure the Calendar app notifications.

  • To get going, open the Settings app> Notifications -> Calendar and then fine-tune the notifications.
  • Make sure to turn on the toggle for Allow Notifications and also ensure that the toggle for Time Sensitive Notifications is enabled.
Select Calendar and turn on Allow Notification and Time Sensitive notifications

9. Disable Focus/Do Not Disturb Mode

It’s important to note that when Focus/Do Not Disturb mode is enabled, notifications from selected people and apps are allowed, while all others are silenced. Hence, turn off this mode.

  • Swipe down from the top-right corner of the screen or swipe up from the bottom edge of the display to bring up Control Center -> tap on Focus -> tap on Focus/DND to turn it off.
  • In order to make changes to any Focus profile, go to Settings app -> Focus -> select a profile -> Apps -> Allow Notifications -> Add Apps button and then select Calendar so that it can send notifications without any hindrance.
open control centre and disable focus mode

10. Be Sure iCloud Calendar is Working Properly

No solution as yet? Fret not! If iCloud Calendar is going through an outage, you can do nothing but wait until the Cupertino giant resolves the issue.

  • Launch a browser on your device -> Go to Apple System Status and then make sure iCloud Calendar is working as usual.

11. Make Sure You Have Enabled the Automatic Date & Time

One reason why your Calendar alerts may not be working might be that the Automatic date & time is not enabled in your iPhone and you set the wrong dates.

  • Launch the Settings app on your iPhone and tap on General.
Open Settings and tap on General
  • Go to Date & Time and turn on the toggle next to Set Automatically and you’re done. 
Go to Date & Time and Turn on the toggle next to Set Automatically

12. Time Zone Override Messes with Calendar Alerts

You can enable Time Zone Override feature to make the Calendar app always show the event dates and times in the selected time zone. While there is no doubt that it’s a pretty helpful feature, it could cause headaches at times.

  • To turn it off, open the Settings app on your iPhone -> Calendar app -> Time Zone Override and then turn it off.
Disable Time Zone Override Messes with Calendar Alerts

13. Reboot Your iPhone or iPad

If the Calendar alerts not working problem is due to a minor software glitch, a soft reset could help you resolve it. Hence, I would recommend you give this well-known troubleshooter a try.

14. Delete and Reinstall Apple Calendar App

On many occasions, you can fix issues related to the Apple Calendar app by deleting and reinstalling it. If you are concerned about losing data, let me tell you that deleting the stock calendar app doesn’t delete your calendars or the associated data.

  • Just touch and hold onto the Calendar app icon -> Remove App -> Delete App and confirm.
  • Then after, open the App Store -> find the Calendar app and install it.

15. Factory Reset Your iPhone or iPad

Factory reset is what I try when an annoying issue doesn’t seem to get sorted out by basic tips. Keep in mind that it will get rid of all the custom settings including Home Screen layout, VPN, Wi-Fi passwords, and more; putting everything back to the default state in the process. But none of your data including photos, videos, music, or messages are deleted.

  • On your iPhone or iPad -> General -> Transfer or Reset iPhone/iPad -> Reset -> Reset All Settings.
Reset All Settings

Wrapping Up…

There you have it! With your Calendar alerts issue resolved, stay updated with timely alerts. As always, make sure to share your thoughts and the solutions that have worked in bringing the ill-functioning notifications back on track.

Read more: 12 Best iPhone Yoga Apps for Weight Loss (2023)

Posted by
Rajesh Mishra

Co-founder/Editor-in-Chief: Rajesh Mishra (Your beloved “R.K” 360 Reader Voice) is a Shakespearean poet at heart who turned a tech nerd while having a secret rendezvous with iPhone 4. When that rendezvous turned obsession, he let go of his hard-core political journalism in favour of the lifelong love-affair with technology. In a career spanning one and a half decades, Mr. Mishra has crafted over 8K articles and around 2K YouTube videos. He is probably the only journalist alive with this unique achievement. When he is not at his desk, you may find him either engrossed in a Deathmatch or chasing Wordsworth!

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