Lost all calendar events on iPhone after iOS 18.5 update

I Updated my iPhone to 18.5 and my calendar events are completely gone. I have tried everything and contacted Apple multiple times. Right now, I am currently using an old device to see if I can use an older iCloud backup to get the events back. I tried one backup, and it didn’t work, so I am working on another older backup to see if that will work. If not, then I have no other options. There was no restore backup on iCloud.com for the calendar either; it seemed to have deleted as well. There was definitely a glitch in their recent update, as I have checked on Reddit, and Apple said a lot of users are contacting them about this. I use my calendar for everything, and it’s all gone.

[Re-Titled by Moderator]

Original Title: Calendar Events wiped out

iPhone 13 Pro, iOS 18

Posted on Jun 15, 2025 9:07 AM

Top-ranking reply

Dej1001 Author

Level 1

50 points

Posted on Jun 16, 2025 9:56 AM

The Apple update 18.5 deleted the “In my phone” iCloud calendar completely the only events that were still there were my email calendar events. The restore on iCloud.com was also deleted. I haven’t had any issues with my calendar until this update it deleted 3 years worth of events.

I used an old iPhone device I had and downloaded an older version of my saved iCloud backup at setup from 6-12-25 which was before the update and I successfully got the calendar events back up. I then had to go through every single day and save each event to my email calendar instead of iCloud so now I have all my events on my current device.

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65 replies

Apr 21, 2026 1:55 AM in response to Dej1001

The Apple update iOS 18.6.2 deleted the “In my phone” iCloud calendar completely! I have an iPhone 12.

It could not update for a while due to data space issues. I have tried to delete huge files, photos, apps and so on. Still not enough space.

But last night it automatically made the update anyway.

But now my calendar is wiped. I’ve tried the standard recommendations: checked in iCloud that calendar setting are on, checked in calendar that all calendars are there, restarted the phone… no luck. All gone from October 2025 and forward. Now I can se the update symbol (lines in a circle) is spinning as if it’s trying to update but can’t. Waited a long time with WiFi on and plugged in. Nothing.

Jun 19, 2026 3:28 PM in response to Dej1001

I just lost all of my past and future calendar events and I’m so upset. All my future appointments, events, birthdays, anniversaries, everything is gone. I’ve tried doing some of the suggestions I’ve seen here but nothing has worked. I’m honestly so done with Apple and this was the cherry on top for me. All of my plans are lived out of my calendar app and now everything is gone and I haven’t found a way to get them back.

julielgr

Level 1

8 points

Jul 28, 2026 6:21 PM in response to Dej1001

This has just happened to me and I am devastated. years of information. I have been on the phone to apple many times and in a apple store and they have no idea how to assist, they have tried every toggle change etc but nothing. If this was from an update and suspect it was major fail apple... someone please help

Aug 19, 2025 9:59 PM in response to DeeDodo78

Did you ever figure this out? This just happened to me and I’m stressing because I have so much on my calendar.

Aug 26, 2025 3:17 AM in response to Dej1001

After getting 18.6.2 my calendar dates with info vanished. How do I get it back. Lost important dates

Blovr

Level 1

15 points

Sep 18, 2025 4:54 PM in response to Kayz2025

Me too! Why? I had my doubts upping to 18.5, made at myself for doing so. Hope someone here has a solution. Thank you

amj3133

Level 1

4 points

Sep 20, 2025 9:37 AM in response to Blovr

Have found my shared events are still in iCloud. Just can't seem to get them on my cpu calendar or phone calendar. Have tried unsubscribing to iCloud and turning back on but that doesn't work.