iOS 15.1 Calendar app is laggy and unreliable

I Have the same issue with both outlook and goupwise accounts in my icalendar, but not in my Mac calendar. I have tried a lot and now have found a work around (not fix) that seems to work for my icalendar. When I disable all non icloud accounts in my the calendar app on my mac, then suddenly all accounts on the the icalendar on my iphone and ipad synchronize at proper speed. Until Apple comes with a real fix, I am prepared to work without the outlook accounts in the calendar on my Mac as long as the calendar on the iphone remains speedy.

I rely on my calendar to coordinate for different diaries. It’s become almost unusable as it just freezes all the time and when I try to put entries in they often go in on the wrong day. Initially I thought it was the phone that was the problem, it looks like it may be iOS 15 that is at the route. Please advise

This is now becoming intolerable the continued issues with diary lag, incorrect information, data mixed up, leading further errors in arranging a schedule. May need to just go back to using microsoft as ICal is now totally unusable for me. I do wonder wh6 it is taking so long to resolve? APPLE PLEASE CAN YOU RESOLVE.

Interested to see this as having exactly the same issue with calendar since IOS 15.1 and have my work (exchange) calendar on both my iPad and phone (8 plus) but the calendar works fine, albeit a bit jerky, on my phone, not on my pad which is mostly blank now.

Since the latest update my calendar is all over the place - items are moving around, I don't know where I am at now with my appointments - I have several calendars - the syncing options have changed - please help!!!!

Solved in iOS 15.2.

using iOS since iPhone 4, must say that it’s the first time that I found an issues with the core business apps at iOS (mail, calendar… )

one thing I did was to delete the calendar app and install it again ( ya, scary… but works)

If your calendars are remote (google, iCloud, exchange, etc.), may I suggest unsubscribing to them (turn them off in iOS), opting to delete the entries on the iOS, letting the process settle down, restart the iOS device, and resubscribing to the calendars, one by one. IN similar situations, this has worked for me.

Good luck.

aps

The original bug - where the calendar was slow to render the events - is fixed in the most recent release of MacOS and of iOS.

My last response was to somebody who had posted that the Calendar program would just not start up.

I am having the same issue with the syncing of calendars across devices. I spent 3 hours and 23 minutes with Apple Support on this issue. After searching the internet, I discovered this is NOT an isolated issues (which is what they made it sound like). Both senior advisors stated they did not see this as an issue. I really don’t understand how they did not know this when several internet sites stated users were having this issue. Why have me conducting the same thing over and over when you could have simply stated we don’t know what is wrong. Or We have learned our attempt to resolve this issue is not working, but our engineers are looking for a resolution.

Then to add to this, they closed my case with no resolution. This after they disconnected me senior advisor number one. Followed by snipe advisor number 2 stating she would call me back. I understand glitches occur with technology but customer service includes transparency and being courteous.

Zazycourage wrote:

I am having the same issue with the syncing of calendars across devices. I spent 3 hours and 23 minutes with Apple Support on this issue.

That is not the issue that this thread is about. I suggest you start your own thread. Your issue is more likely to get seen that way.

It’s ridiculous. This has been going on since 15.1 was downloaded in my 12 pro max and I just upgraded me and my wife to a 13 pro max and we are both experiencing the same thing. Freeze on calendar cold start, lagging scrolling and launching of an event selection and it almost always starts on our earliest recorded calendar event….for me 2010. This has nothing to do with hardware or linked accounts and should be old news by now….

Coachdj1313 wrote:

Has anyone seen this resolved or gotten a fix from apple yet? January 2022 and I’m still experiencing this same issue with my calendar.

If you go back and read the thread, you'll see that most people who've updated to iOS 15.2 seem to have had the issue resolved.

Elephants1234 wrote:

This issue only started for me with 15.2 and no it is not resolved

Then you most likely have a different issue that happens to have similar symptoms. I'd suggest you start your own thread. You're more likely to get help that way.

when I open my calendar, it immediately freezes so I’m not able to scroll through items, cannot search, can’t enter a new event… nothing! And the it just abruptly closes. I use my calendar for EVERYTHING

Clearly a problem. It is causing me to overbook appointments and is not exhibiting the high standards of Apple. However, I also realize that all of the players (Google,Microsoft,Apple) desire to steer folks toward their apps.