iPhone Tips

How to Fix iPhone Calendar App Crashing/Freezing after iOS 17 Update

by Jenefey Aaron   Updated on 2023-09-01 / Update for  iPhone Tips

Several days ago I updated my iPhone 12 to latest iOS 17 and what right after the update my Calendar app started freezing and sometimes crashing. After multiple attempts to solve the issue by the Apple support the problem is still there.

--- from Apple Community

iPhone Calendar app crashing after iOS 17 Update is a very frustrating issue. In order to experience the new features of the latest iOS 15, many users choose to upgrade their iPhone, only to find that the iPhone Calendar app freezes and crashes. If you're having a hard time with your Apple Calendar app, read on and find the detailed procedures on how to fix iPhone Calendar app crashing iOS 17.

Part 1: Why Is My iPhone Calendar App Crashing

"Why do apps keep crashing on my iPhone" is one of the most frequently asked questions by iOS 17 users. Though the iOS 17 upgrade has fixed some previously known bugs, it seems that it also brings some new problems. With the calendar app keeps crashing and crashing on your iPhone, you may get annoyed and are eager to find out the reasons why your iPhone calendar app keeps crashing. Well, there could be many reasons for it.

Generally, iPhone calendar issues including calendar frozen on iPhone, calendar crashing on iPad/iPhone and calendar slow to respond appear due to a glitch with the system. The iphone calendar bug in the iOS 17 makes your iPhone Calendar unable to scroll, freeze and even crash. Another possible reason is that you were using an outdated version of the Calendar app that didn't go with the updated OS.

Whatever the specific cause, this issue is solvable and all the available and effective fixes are detailed in the article below. Check them out.

Part 2: Fix iPhone Calendar App Keeps Crashing/Freezing with One Click

If the calendar keeps crashing, the most effective fix would be to use a professional and reliable system repair software to fix the iOS system glitch, thus the iPhone calendar problems can be solved permenantly.

Tenorshare ReiBoot is great professional software with state of the art algorithm that fixes the system fast. Without cauing any data loss, it is capable and can effectively fix more than 5O different iOS related issues, such as iOS 17 battery drain fast and Photos app keeps crashing on iOS 17.

Let's check out the steps for fixing the iPhone calendar freezing issue.

  • Download and install Tenorshare ReiBoot on your computer and connect the iOS device to it. After that, launch the program and click on the "Start" option from the home screen.

    fix iphone calendar keeps crashing - step 1
  • Select the Standard Repair mode and read the note below before starting the repair process. Then click the "Standard Repair" button to proceed.

    fix iphone calendar keeps crashing - step 2
  • Now, you have to download the required firmware. Simply click "Download" to get the latest firmware.

    fix iphone calendar keeps crashing - step 3
  • When the firmware is downloaded, click "Start Standard Repair" for iOS system recovery.

    fix iphone calendar keeps crashing - step 4
  • When the repair process is finished, your iOS device will automatically reboot and your iPhone calendar crashing or freezing issue should now get fixed.

    fix iphone calendar keeps crashing - step 5

So, if your iPhone calendar app crashing on your device and you are looking for an option to fix the issue without data loss, then we recommend you use ReiBoot.

Part 3: Other Common Ways to Solve iPhone Calendar Frozen

It doesn’t matter if the Calendar crashing on iPad or Calendar crashing on iPhone. They are both easily fixable with ReiBoot without data loss.

You may not have expected this, but there are other feasible solutions available too. Check them out below.

Try with 3R - Restart, Reset and Restore

Our first approach is a piece of very common advice provided by Apple Support. They call this solution, 3-R. These ‘R’ represent Restart, Reset, and Restore.

Let’s check out the steps to fix the iPhone calendar app keeps crashing.

Restart iPhone 13/12/11/XR/XS/X/8

  • Press and hold the Side button and wait for the Slider to appear on the screen.
  • Drag the Slider to the edge of the screen and turn off the device.

Now, wait for 30 seconds and use the Side button to turn on the device.

Reset All Settings on iPhone 13/12/11/XR/XS/X/8

In this part, you have to factory reset the device. Look at the steps below.

  • From the ‘Settings’ tap on ‘General’.
  • Then tap ‘Reset’ and then select ‘Erase All Content and Settings’.
  • You will be asked for the passcode of your iPhone to execute the process successfully.

Restore iPhone 13/12/11/XR/XS/X/8 via iTunes

Just like the previous process, this method will also cause permanent data loss. So, if you have a backup available, it will be helpful.

  • Run the iTunes app on your computer and connect the iPhone to it.
  • Follow the on-screen steps to establish the connection successfully.
  • Now, on the iTunes panel, click on ‘Summary’ and select ‘Restore iPhone.

Then, just select the latest backup from the computer and click on the ‘Restore’ button.

Way 2: Remove All Background Apps

Try removing all the background apps from the iPhone. The steps are very simple. But after you execute them, the iPhone calendar app keeps crashing issue may disappear.

  • Navigate to ‘Genera’ from the ‘Settings’ of your iPhone.
  • Then tap on ‘iPhone Storage.’

A list of apps will be displayed on the screen. Delete the apps that are running on the background.

Way 3: Delete and Re-install Calendar App

If the iPhone calendar keeps crashing, you can try re-installing the app. But for that, you have to uninstall the app to begin with. Here are the steps;

  • Press and hold the ‘Calendar’ app icon on the home screen.
  • ‘X’ will appear. Tap on it. The app will be removed.

    reinstall the app
    Pic 1. Reinstall the app
  • Now, download the app from the App Store.

This is a very simple procedure, but if it didn’t work, then move on to the next solution.

Way 4: Force Quit and Re-launch Calendar App

So, the iPhone calendar freezes when adding event. Well, you can force quit the app and then launch the Calendar app again.

  • Get to the list of recently used apps and swipe up. The app will be closed.
  • Now, go back to the Home screen and re-run the app.

This is another effective solution that should work.

Way 5: Check for Update to Solve Calendar Frozen on iPhone

Last but not least, if the calendar on iPhone keeps crashing, check if there are any updates available.

Possibly the outdated version of the calendar app is not running well with the latest version of iOS. So:

  • Go to the App Store.
  • Look for the Calendar app,

If any updates are available, you need to install it. The Calendar will stop crashing.


Hence, there are multiple solutions available for fixing iPhone 11 iOS 17/16/15 calendar crashing. But after going through this article, you have already realized, none of the above solutions provided the required guarantee or safety like Tenorshare ReiBoot.

Just download and install ReiBoot to fix the iPhone calendar crashing/freezing issue effortlessly and effectively, you won't regret it.