Q: Calendar and Contacts not syncing after iOS 9 upgrade

I've got iCloud syncing problems as well.

(Plus, there is a 10 GB backup of my old iPhone 6 with iOS 8 in the cloud, which I can't see or delete from my new 6S with iOS 9. All known bugs as it seems.)

What I have noticed is it seems that iOS 9 "forgets" entries >30 days old. I used (past tense) my iPhone calendar to record events that I wanted to remember. I might go back a couple of months. Make an entry (I can see it in iOS calendar), wait 30 secs or less and see the entry disappear. I go to OS X calendar and the entry I created on iOS is on my mac but NOT on the phone.

I have done the iCloud off> reset set network settings bit. No change.

It remembers repeating events.  But not one-offs. And does not remember beyond about a month.

Anyone else see this?

El Capitan 10.11

iOS 9.0.2

BREAKTHROUGH DISCOVERY!

I just figured out why my contacts weren't syncing when I updated to iOS9. After the update, a lot of the settings on my phone were reset to default (ringtones for specific contacts, for example). Among the settings that were reset was the Default account for creating a new contact and calendar. 

I happen to have Google Contacts set up to show up on my phone along with my iCloud contacts.  I had my default Contact and Calendar creation account to be iCloud, but after the iOS9 Update that switched back to Google for some reason. 

THE FIX

Go to SETTINGS > MAIL, CONTACTS, & CALENDARS > Scroll down to Contacts

Change "Default Account" back to iCloud.

This is what was causing the issue for me.  It's a "gotcha" kinda thing, which is super annoying because it shouldn't have changed in the first place.

Now, if I could just get my frickin' notes to sync from iOS9 to Yosemite.

Yep, this is the fix I was looking for! Thanks...

I'd like to say that any of these post hoc fixes fix the calendar and contacts syncing problems for me, which are erratic contact syncing and the iPad Air 2 calendar neithen adding nor (of course) syncing to iPhone 6s. iPhone contacts also syncing erratically but, oddly enough, calendar works and syncs to iPad.

All worked flawlessly until iOS 9/.01/.02

YIkes Apple!

I'm glad you were able to help others with an iphone 6.  But would you be able to help me?  I have an iphone 4 and my Notes and Calendar are no longer syncing with my other Apple products.  But the instruction you gave doesn't really apply to iphone 4.

When I go to settings / icloud / then scroll to the bottom, it does not say / sign out / but it says delete account.  Then when I touch delete account it tells me that I could delete all documents, photo stream pictures from the phone.

Do you have an alternative response for me?

Hope you could help this frustrating problem for me.  My software is up to date but for iphone 4 it is !OS 7.1.2.  My ipad is up to date 9.0.2

Thanks  Irahs

Hi all

when i try to sync the contacs in the iCloud on my iMAC i receive following error message:

(CoreDAVErrorDomain-Fehler 1.)

i'm still working with OS X Yosemite 10.10.5 (14F27), only my iphone as the newest iOS 9.0.2

Just mind boggling that every iOS update and now also El Capitan upgrade from Apple breaks things so regularly. And one has to do the thing we used to make fun of Windows users for... Oh, just delete everything, and re add all accounts and it will work... Sorry you are having the same issues I am.

Imran

I have the same issues, Google and MS calendars seem to work just fine. Only the iCloud calendars don't synchronize, not even after re-installing. Is there any solution?

WOW Peter! It works! Thanks!

Am I the only one who is still in trouble?

downloaded the latest update today, and still no syncing!!!

Not the calandar, not the notes, and worst, a whole bunch of contacts have been removed from the iphone (luckily they still appear in the computer at this stage)

Does Apple care that I can't use my Iphone properly any more? Does Apple care at all?

Ican't see anything useful on the topic anyqwhere on the assiatce pages and what we all write in the various feeds in the forum does not get anywhere (if you don't want to erase everything and recreate rom scratch)

I cannot get any connection from assistance and everything I read makes me feel like you have to reset everyting as if you were never an Apple customer before?????

I do not use the Cloud, I do not use google anything, I do not want to sync with the whole range of devices but just between the blooming imac and the blooming iphone. Obviously, Apple did not secure any way to manage it?

Please????????????

My solution to syncing problem of iOS 9:

I changed my IP number and my DNS on all of my devices (iPhone, iPad and iMac). DNS numbers should be same on all devices. It solved my problem. Everything (calendar, contacts, notes, photos) is syncing now with either wi-fi and cellular networks.

I talked for hours with Apple Care. They're refusing the problem and saying only that: Reset your device and don't restore from your backup, start from scratch. This should not be the only solution for every problem. It's an hours-long process and I will lost all my data for years. And all apps must be downloaded again. In my case it's 50 GB. Apple is not caring us anymore.

Dear JerryFromNYC,

perfectly described.

My addition to what I have already written ..... Even after an upgrade of my iPhone 4S to iOS 9.1 ..... When I change a contact in an iCloud web interface, then the change is not mirrored to an iPhone.

I am able to enforce only a one-shot synchronization via power down / up the iPhone or switch off / on the iCloud services. But subsequent contact changes are again not mirrored from iCloud web interface into an iPhone. It looks, that Contact applications does not even try to connect to a server (no jiggling wheel).

Only, when I make some Contact change in an iPhone 4S, then the synchronization is forced and a value from iCloud web interface is mirrored to an iPhone.

I do not use Google or Exchange Contacts. I use only iCloud Contacts.

Thank you wowpeterHKG! You took one for the team. This process actually worked, which is going to erode some of my hard-earned skepticism re Apple Support. Thanks again.