Birthday calendar duplicated hundreds of times on iOS 10

I'm having this same issue, 100's of birthday calendars under Facebook, as well as other. Can't be deleted. Tried turning off calender sync, removing FB app and reinstalling, etc. It also seems to have persisted via backup when I restored to my new iPhone 7.

I live in my calendar, and this has made it entirely unusable on my phone; not to mention draining my battery in a couple of hours at absolute most. All calendar apps just crash out before being able to do anything. There's seemingly no way to delete them/remove it.

I think that Genius is wrong. It has little to do with Facebook app.

My Facebook app is not synchronized with iPhone and I have duplicated birthdays of people that are in my contacts and I don't have them as friends on Facebook.

Btw, after disabling all calendars now I also got hundreds of blank Calendars, similar to Birthdays. I can delete them (I think), but app crashes all the time.

iOS 10.1.1 didn't help..

Same issue here. Tons of Birthdays calendars under “Other” category which I can't delete. I use Fantastical mostly with Google Calendar accounts but I don't think those are the culprit. I don't have any Facebook calendars.

Same here... tried everything...

Same problem here. Any options to fix this?

I've opened a bug report with apple, uploaded some crash logs/etc, so will see if they can figure anything about it. Will let you guys know if/when I have any updates.

29190970: Hundreds of undeletable birthday calendars

devalias, I have done that too, maybe you could tell your support tech my case number (********), so they could consolidate the same problems and have more resources work on this together. I am an IT guy and I've done many troubleshooting myself before contacting them. So far I have learned:

1. The problem is not only "seeing duplicate calendars being annoying", it makes many other apps not working or extremely lagged to a point that they are almost not usable.

2. The problem has nothing to do with any online account (iCloud, gmail, yahoo, hotmail, facebook), when I deleted and logged out from all accounts, they still appear (as calendars on local device).

3. the problem did not happen in the first iOS that came with iPhone 7, I think it started from probably 10.0.1 or 10.0.2. I am sure my iPhone 7 was working fine in the beginning, because I use my calendar multiple times everyday.

4. the problem will be carried in backup (whether iTunes or iCloud) and is duplicable to other iPhone 7 devices

5. the problem only happens on iPhone 7, when I restore my backup to iPhone 6 and 6S, there was no duplicate calendars and the whole phone works as smoothly as it should be.

Worst part is, even thou I have deleted Calendar app, I still get highest battery usage level with "Recently Deleted Apps" on top with 52% right now. And my iPhone is hot all the time.

If it kills battery on my old iPhone 5S, how the heck can I get a refund?

achen2002: Amusingly, on this message board your case number is blocked (*'d out), but in the email notification I received about your message, it was included fine. (yay consistent results! 😝)

I can't speak to 3, as I didn't pay attention to whether it came from iOS 10 or a point release, but with 5, I was definitely seeing it on my iPhone 6+, but I am pretty certain only after I upgraded it to iOS 10. Can't confirm whether a full wipe and restore would carry them back (sold the phone), but I assume it would (as that's how my iPhone 7 became 'infected').

I spoke to Apple, opened a case, went through the boring checklist. On top of that, I tried:

-unsyncing all active calendars

-reloading the calendars using iTunes forcing overwrite of the calendar data

-deleted and removed Facebook.

-deleted and removed Calendar.

I got it to the point where it only had the garbage Birthday calendars. There were no options to selectively delete the data specific to one app. I would have loved to restore the Calendar data and resync all my calendars but alas, the only real solution was to do a format of my phone and NOT restore from backup. Took me a good six hours to go through the whole tier 1 call centre support and eventually just pull the pin to get it back to a usable phone. I considered jailbreaking it because if I could get a shell on the phone, I could easily fix it.

I filled out the Apple Customer support survey and this was my closing remark:

Please treat phones like a full computer, which they are, and allow power users access to fix issues rather than expecting them to do a full format and reinstall. If I called Tech Support for my mac computers and the tech's only real advice was to format my computer and set it up from scratch, how long do you think it would take for me to migrate away from Apple?

That was the 'advice' I was given by the genius at the Apple store, but format and start again isn't a solution, it's avoiding/ignoring the problem 😟 Sorry you had to go through that pain, but at least you have a working phone again!

devalias,

The case number got masked by Apple support, they said it's personal information and is banned. Well, we are here trying to help them resolve a problem..... 😟

But at lease you get the full case number in email, please provide that to the Apple tech who's helping you and let him know that there are many others having exactly the same problem.

achen2002: Haha, that's silly (particularly since they left mine a few posts higher..) Have included it in my bugreport comments.

Same thing here. iOS 10.1.1

Hundreds of birthday calendars appear under the "OTHER" list of Calendars. Even after I disabled all iCloud and Google Calendar syncing of calendars AND contacts, and select "delete from my phone" whenever possible. Even when removing Facebook's calendar access and uninstalling the Facebook app. After all of these steps, and restarting my phone, I still have hundreds of useless Birthday calendars that I cannot remove. This problem also persisted upon moving from my iPhone 6 to a 7s recently.

I would be less concerned about this if the list wasn't GROWING. Whatever is causing the duplicates is still happening. I can't reliably use calendar functionality on my phone anymore. This is a disaster and I am disheartened to see evidence of this birthday calendar duplicate issue as far back as 2013, even 2010 from some support threads. And he we are at the end of 2016 and people are getting turned away from the Genius Bar with "sorry, there's nothing we can do"?

Please, please, please. I will give my phone over to the San Francisco Genius Bar for forensics or whatever. Just please give me a functional calendar again. Please at least give us a tool to clean the bad data from our backups so we can get a fresh start. Please give us something.

I have hundreds of generic "Calendars" and hundreds of Birthday calendars. I don't have Facebook even installed on my phone (and don't use it), and didn't have Fantastical until 10 minutes ago when I installed it hoping it would help with the problem. This is a recent iOS 10.* problem, never happened before. Not a google/gmail problem that I can see. Gmail calendar syncs one-way only: from desktop to mobile; mobile entries do not appear on desktop. iPhone 6 running 10.1.1.