calendar is slow to respond after update to ios 15.1 on iphone XSmax

Issue is Apple should be accountable for this, instead of asking you to reset your phone or remove accounts to fix the issue…. This is not fixing Apple…. Also the battery is drained every time I open the calendar and the phone is burning at touch

This is affecting all iPhones and all calendar types, outlook, Exchange, gmail etc. I cannot believe that this bug made it through Apples QA, and he fact that Apple gives crappy “ do factory reset” is disgraceful. It’s a bug FIX IT and release update. Calendar is one of the most important tools since many of us have many calendars and the phone makes it easy to see all in one screen.

come on Apple 🙁

I have iPhone 11 Pro Max and I have the same issue with my calendar. When I check mark my exchange email on, my calendar app slows down significantly and lags a bunch. I have software 15.1 and it seems like this issue on my phone just started less than a week ago.

I don't think this is really true.

When I switched my iPad and iPhone Calendar and Contact apps from Apple to Google apps everything works perfectly. In the iOS apps at first view, everything is incorrect (wrong dates and events) and slowly the calendar will update, the data is all there with the correct metadata. It's a network data pull issue (sloppy code, no regression testing)

This is simply really TERRIBLE QA on Apple's part.

As a Tech Lead / Program Manager with 15+ years experience, this is inexcusable. Apple tells people to restart devices, delete apps and re-install them. As one other commenter put it when told this at "Genius Bar", I would have expected that nonsense from Microsoft, not Apple. Sorry Apple this is a #fail

In addition, the iPad home screen widgets are also screwed up in 15.1, photos not available, cannot add new ones, again sloppy coding

I upgraded to 13 Pro Max, same issue from scratch. My colleague had no issues and then it started acting up like mine. He has a 12. There doesn’t seem to be a common denominator in all of this except for Exchange. All the advice received from Apple did not work. I guess that Apple needs millions of pi$$5d off users to solve the issue. It is very disappointing.

Sorry, it was All Settings. Which by the way resets wallpaper, Bluetooth, Wifi and Apple Pay. So it’s a PITA.

The issue is also reported and discussed here:

https://origin-discussions-us.apple.com/thread/253295714

At least Exchange, I have seen others reporting issues with Google accounts as well.

Yes, me too but not so much.

I decided to uninstall the app until its fixed.

/alex

It took some time (like 30 minutes) for the app to speed up.

After one night the app is still functioning faster than before (like the app is workable). However I agree still not what it used to be.

I suggest to use an alternative app such as CalAlarm. That’s much better than any Android.

/a

Widely discussed here (no fix yet)

https://discussions.apple.com/thread/253295714

As a temporary fix you can go to Siri and view your calendar and enter dates. At the permanent

Same to me on iPhone X (slow) and iPhone SE (very very SLOW!).

It looks like it gets stuck and then, for a while, it unblocks... then it blocks again if you scroll more that one or two days in agenda view.

Same on my iPhone 6s: up to iOS 15.02 the phone and all fuctions worked well.

After the update to iOS 15.1 at least the Calendar responds slow, or even crashes at times.

Did restart the phone a few time without result.

Makes the Calendar quite unusable.