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How to fix Samsung Galaxy S9 with “Unfortunately, Calendar has stopped” error (easy fix)

ByHarold Hisona

The error message “Unfortunately, Calendar has stopped” is a notification that the default calendar app in your Samsung Galaxy S9 has crashed for some reason. It could just a minor app issue or a serious firmware problem since Calendar is one of the core applications that come with every Android device.

In this post, I will walk you through in troubleshooting your Galaxy S9 with Calendar that keeps crashing. We will try to look into every possibility and rule them out one by one until we can determine why this issue happens and formulate a solution that may fix it for good. So, if you’re one of the owners of this device and are currently bugged by a similar issue, continue reading as this post may help you one way or another.

For those who are looking for a solution to a different problem, drop by our troubleshooting page for we have already addressed some of the most common issues with this phone. Browse through the page to find issues that are similar with yours and use the solutions we suggested. If they don’t work for you or if you still need our help, contact us anytime through our Android issues questionnaire.

How to fix Galaxy S9 with “Calendar has stopped” error

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We have encountered this problem several times in the past and more often than not we resolve those issues. It’s not really a serious problem but you may lose some of your calendar entries especially if your haven’t synced your phone with your Google account prior to this problem. Anyhow, here’s what you have to do about it:

First solution: Reboot your phone

A reboot should be the first thing you should do to try to fix this problem because it might be just a result of a minor glitch in the app or the firmware. So, hit the power key and restart your device and after which, open Email to know if the error still shows up or if it still crashes. If it still does, I suggest you try doing the Forced Restart:

  • Press and hold the volume down and power keys simultaneously for 10 seconds or until the phone reboots.

This procedure will simulate battery disconnect and refresh your phone’s memory by closing all apps, services and core functions. It’s still very effective in addressing issues that might have been caused by some glitches. However, if the app still crashes after this, then move on to the next step.

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Second solution: Reset Calendar

A reset means to clear the cache and data of the app you’re having problems with. If this is just an app issue, then the problem should be fixed by doing this procedure. This will delete the apps cache and data as well as some of the entries you might have not synced.

  1. From a Home screen, touch and swipe up or down to display all apps.
  2. From a Home screen, navigate: Settings > Apps.
  3. Tap App Manager.
  4. Locate then tap Calendar.
  5. Tap Storage.
  6. Tap CLEAR CACHE.
  7. Tap Cached data.
  8. Tap CLEAR.

This is the most effective solution to almost all app-related problems but then there’s no guarantee that it will work with all cases. So, in case the problem continues after this, then the next method will definitely fix the problem.

Third solution: Run phone in safe mode

This will tell you is the problem or the error is triggered by a third-party app or not. If the issue doesn’t occur in safe mode, then the next thing you should do is find out which app causes it and uninstall it.

  1. Turn the device off.
  2. Press and hold the Power key past the model name screen appearing on the screen.
  3. When SAMSUNG appears on the screen, release the Power key.
  4. Immediately after releasing the Power key, press and hold the Volume down key.
  5. Continue to hold the Volume down key until the device finishes restarting.
  6. When Safe mode appears in the bottom left corner of the screen, release the Volume down key.

Assuming that the problem is fixed in this environment, the next thing you should do is find out which of your apps is the culprit and once you suspect an app, uninstall it. Here’s how you do that:

  1. From the Home screen, swipe up on an empty spot to open the Apps tray.
  2. Tap Settings > Apps.
  3. Tap the desired application in the default list.
  4. To display preinstalled apps, tap Menu > Show system apps.
  5. Tap UNINSTALL > OK.

Determining what app is causing the problem is often a challenge to many users. So, you must uninstall apps that you recently installed first or those that you installed prior to the problem. If the problem continues after this or if the error continues to show up in safe mode, then try the next procedure.

Fourth solution: Wipe cache partition

This will rule out the possibility that this problem is due to corrupt system caches. Doing this will delete all the caches created by the system and replace them with new ones. It’s as effective as the reset but none of your files and data will be deleted, so it’s worth it. Here’s how you do it:

  1. Turn off the device.
  2. Press and hold the Volume Up key and the Bixby key, then press and hold the Power key.
  3. When the Android logo displays, release all three keys.
  4. An ‘Installing system update’ message will show for 30 – 60 seconds before the Android system recovery menu options appear.
  5. Press the Volume down key several times to highlight wipe cache partition.
  6. Press Power key to select.
  7. Press the Volume down key to highlight yes, them and press the Power key to select.
  8. When the wipe cache partition is complete, Reboot system now is highlighted.
  9. Press the Power key to restart the device.

If the error continues after this, then it’s time to reset your device.

Fifth solution: Master Reset

Before the reset however, make sure you backup all your files and data as they will be deleted during the process and you may not be able to retrieve them after that. After the backup, make sure you disable the Factory Reset Protection by removing your google account from your phone so that you won’t be locked out. Once everything is set, follow these steps to reset your phone:

  1. Turn off the device.
  2. Press and hold the Volume Up key and the Bixby key, then press and hold the Power key.
  3. When the green Android logo displays, release all keys (‘Installing system update’ will show for about 30 – 60 seconds before showing the Android system recovery menu options).
  4. Press the Volume down key several times to highlight ‘wipe data / factory reset’.
  5. Press Power button to select.
  6. Press the Volume down key until ‘Yes — delete all user data’ is highlighted.
  7. Press Power button to select and start the master reset.
  8. When the master reset is complete, ‘Reboot system now’ is highlighted.
  9. Press the Power key to restart the device.

I hope that the problem with your device is fixed after this. If you have other concerns you want to share with us, feel free to contact us or leave a comment below.

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