some iCloud data isn't syncing

I had the same issue after downgrading from iPhone 12 to 11 (long story :)), "some iCloud data isn't syncing". I set up both devices with the same 6-digit passcode, but the new device kept asking me to enter the code for “your other iPhone”. After entering the (same) code I could get a pop-up "not the code for this iPhone, but for your other iPhone", although the codes were the same.

It turned out that I had another iPhone 4S still active and it had a 4-digit code. Luckily, I still had the access to my old 4s, changed its passcode to a 6-digit code, went back to my new device, entered the new 4S code when I was asked for “another iPhone code” and voila - problem solved.

My advice is, check all your device, not only the recent one that you are replacing with a new one.

This work for me, I delete the backups from old devices I didn't have anymore on the iCloud Backup Area (settings/Apple ID/iCloud/iCloud Backup/ALL DEVICE BACKUPS)

Even after removing the device from the settings months ago, Apple still kept a copy of those old phone (Backups)

Signing in and out of icloud as some here suggested did not remove the issue. It actually resulted in losing all my passwords on my ipad. When I signed back into icloud with my Apple ID it asks me to then enter the passcode for my iphone and then I am asked to enter the passcode for my ipad. I did that but then it asks me again to enter my old passcode. Why is it asking for my old passcode of a device I do not have anymore? This doesn’t make any sense. Also, it does not specify which old passcode and from when. I am changing my passcode every month (which is our company security policy) so it is almost impossible to replicate an old passcode.

Can you remove the old device from “trusted devices”? From the top of settings, select your name, scroll to bottom to see trusted devices. I’m having the same issue, says health data, maps and passwords not synching? I don’t use the health data, and don’t save passwords. Someone mentioned Google maps? I’ve had many other issues as well, now wondering if it is referencing Google apps? I would not think Apple would track passwords on Google. And Health is turned off, I’ve never used it, but at one point, it had someone else’s data in it? And I really wonder what passwords are sharing with the cloud?

I had this strange problem as well. What worked for me (and maybe I was lucky) is that I used the same code from the current phone that it was asking from some other second device which I know longer have.

So I have reset and I have wiped my phone twice in the last week. This makes no difference at all on this issue that keeps popping up. Does Apple Pay attention to these forms or do I need to actually call them because nothing is working for this

It's really unacceptable that this pops up every 2 days or so on my iPad and my iPhone and forces me to log in to resync data. This is an Apple server issue. So what do I do, turn OFF syncing and have nothing at all backed up to get rid of these incessant repeating messages? That seems to be the only way to solve this. Apple needs to get their case together and stop this repetitive nonense. Remember several months ago where a lot of people had to reverify constantly by signing in? Same kind of nonsense.

MichiGreen: I had the same problem, until I rotated my iPad to portrait mode. Then I saw that the blank screen that appeared was asking for my iPad passcode, which I couldn't see in "landscape mode.

it says some iCloud data isn’t it syncing

your ending to end encrypted data stored in iCloud can’t be accessed on this device it includes save password and data from health and maps verify account. Information. To resume. Syncing. I for got my password it knows my old password and I don’t know its in number call me 321-3131016 I need help with with this please and thank you have good day

My mother has been getting this same message and i think i know the source of the problem. Another bit of fallout is that it logs her out of Facetime and so when i try to call her it shows she is unavailable on FT. If she tries to call me she has to sign in but since i am usually the one calling her she often doesn't know she is logged out of it.

she doesn’t have 2FA turned on. The reasons for this are twofold. She doesn’t have another Apple device or a cell phone and she doesn’t use Apple Wallet. She is 91 years old and doesn’t shop or bank online and therefore has nothing other than email on her iPad. There is nothing she needs to worry about having secure access to so we are really loathe to activate 2FA. The landline is in a different room and at her age if the landline rings she gets up and goes to the room with the phone which isn’t where her iPad is and then having to scramble to have a piece of paper and a pen handy to write down the code Apple would give her over the phone is unrealistic.

I haven’t found the solution to this yet. We tried to delete the Health App as she doesn’t use it but she we couldn’t. As for Keychain backing up her passwords she only needs that when we get her a new iPad every 5 years or so!

Are you talking about Erase ALL Content and Settings?

How do you get the pop up for resetting the ETE encryption?

reset what & where?

I didn't check the icloud contents. I backed up the phone using iTunes, then restored it... the alert went away.