Birthday calendar duplicated hundreds of times on iOS 10

DecipherTools solution fixes it!

And I'm not that technical – it was easy. Just a simple restore from their fixed backup. So relieving! Worth the $29.

Thanks for your feedback about DecipherTools hankleber!

Could you please keep us posted about whether or not the duplicate calendars reappears on your device after a while?

I have this issue on my iPad and iPhone. (1) extra birthday calendar on my iPad and (2) on my iPhone. I tried all sorts of things and decided to format my iPad and start as new. That was the only way to fix the problem. I have my iPad working as it should now, but to do the same on my iPhone would take at least a day or more. Not something I want to try...yet.

This is a significant bug in iOS. Hopefully Apple will address it soon, because I shouldn't have to basically blow up the phone and start as new to fix this annoying calendar issue.

Will the Decipher repair tool also fix the broken sync in the calendar?

A clean up is not enough for me.

I'm losing patience. The bug is also affecting the birthday calendars usefulness on my Apple Watch. Am mortified ultra expensive hardware is being let down by buggy software.

I just posted this on twitt

@AppleSupport my birthday calendar is reproducing itself and there’s no way to delete them. Help @Gizmodo

#ioscalendarbug

OMG, OMG, OMG, this is my happiest day since I got my iPhone 7 --- the problem was fixed by Decipher Backup Repair tool, and I am no longer wanting to smash my new phone, this is the best $30 that I ever spent in S/W. I wonder why I waited so long after seeing other people's testimonies ??

Link: https://deciphertools.com/blog/birthday-calendar-duplicates-ios10/

NO acknowledgement from Apple on Twitter either. This bug is typical of how they pretend something doesn't exist and ignore it. I assume nobody else saw any improve,rent with the latest iOS update released earlier in week?

Nope. No improvement whatsoever...

I found out that the Decipher Tool repaired more errors than I expected. If you currently have the multiple calendar problem, please check Settings - Privacy - Location Service - (scroll to the very bottom) System Service - Frequent Locations. Mine stopped recording since the calendar bug began, I did call Apple for support on that, I was only told to turn it off an back on, and wait a few days, but it never came back working, it was frustrating because I use 3D touch on the Map app to navigate to my frequents locations, but this wasn't as bothersome as the calendar bug, so I kind of just ignore it.

Only two days after I used the Decipher Tool to repair and restore, this started working !!

Hi All,

I am the Dean in the post made by Kelly at Decipher Tools. Apple executive relations are well aware of the issue and have been working closely with me on this.

I now have 3 iPhones (2 x iPhone 7 Plus & 1 x iPhone 6S Plus) in my possession.

Kelly's custom build will certainly fix this issue especially the birthday duplication issue.

If you want to just eliminate the "Calendar, calendar" simply delete ALL accounts on the phone not just turn off calendar.

Best Regards,

Dean

"If you want to just eliminate the "Calendar, calendar" simply delete ALL accounts on the phone not just turn off calendar."

Faulty advice, I believe, since I have done exactly this. The multiple calendars are local calendars, not networked calendars. Deleting every account on the device simply deletes every calendar except these. There is no way I have found or can imagine to delete these local calendars within the limitations of the current iOS. One has to go outside iOS, either with jailbreaking (currently impossible with iOS 10) or by editing the data in a backup and then reloading.

Yeah, I just tried this.

Now have a lot of 'Calendar' entries (that I can delete... but I can't manually delete thousands of these) and a whole ton of birthdays still.

Doesn't seem to work.

Sorry guys you are correct I have done this several times repeating the steps with success. Regardless if they are locally stored or synced from cloud.

Settings>Calendar>Accounts "DELETE EVERY SINGLE ACCOUNT" sign out of iCloud and remove from iPhone.

Then final and most important step:

Settings>General>Reset>Reset All Settings.

You will now see Calendar duplication will have disappeared phone should be running cooler and battery life better, however this will not remove the duplicated Birthdays. If you encounter this issue you must use Kelly's custom version of Decipher Tools.

"Then final and most important step:

Settings>General>Reset>Reset All Settings."

You entirely neglected to mention this "most important" step in your 12/19 post.

Reset All Settings "removes all of your preferences for Wi-Fi, Bluetooth, Do No Disturb, Notifications, General, Sounds, Brightness & Wallpaper and Privacy." That's a data loss that many of us find unacceptable, and none of us should have to undergo.