iPhone call history shared between devices after iOS 17 Update

Did your employer IT folks install MDM (Mobile Device Management) profile on your work phone? Most employers do and if they did, they usually have access to any data on the work phone. If you go to Settings > General > VPN & Device Management and you see a profile there, your employer has access to pretty much anything on your iPhone.

lobsterghost1 wrote:

tanurag wrote:

Even i don't know after getting that much of complaints why apple didn't took any action or repair regarding this technical issue/error?

Likely because Apple doesn't believe this is an issue and it's working as they intend it to work.

Even if Apple was considering changes to the behavior, most companies who were looking at changes like this would not implement them instantly.

The change that people here want is a feature request. And it's one that potentially interacts with other features that Apple and its customers would want to maintain, like the ability to use a Mac to place or receive phone calls with the aid of a nearby iPhone. If Apple is considering changes, I hope they're taking their time to think through the interactions of related features in various cases – not just the case of two iPhones with the same Apple ID.

If Apple management decided to add the requested feature (NOTE CAREFULLY: I am NOT saying, or speculating, that they have), it would still take time to

• Try to separate out the real requirement from all of the broken implementations stated as requirements
• Clearly document the requirement
• Come up with prototype designs for implementing the requirement
• Think through how these designs would interact with related features
• Determine what changes needed to be made to the code base
• Make those code changes
• Test the code
• Build a new release of iOS
• Run through the process for documenting the release and distributing it to the entire world

That's the way software development works for products that have huge numbers of users. Even something that involves a very small, low-risk change to the code base may take a LONG time to work its way to a release – once you consider all of the steps meant to filter out bugs ("release in haste; repent at leisure").

Plus, do you think that Apple only works on one iOS feature or bug at a time? For software like this, there will be many code changes, for many different things, going on at the same time. Release management won't be about just selecting and testing one feature/fix, but about selecting and testing a whole bunch of them. If any of those are incomplete, or are insufficiently tested, or have fatal bugs, that could hold up an entire release, including the changes that work just fine, but aren't in customer hands yet.

AK13_ABC wrote:

you can disable call log sharing in ios17 by changing what info is kept on iCloud for PHONE application (at least that helped me):

go to settings -> AppleID -> iCloud -> Apps using iCloud / Show All -> Gray out PHONE button

This doesn't work unfortunately and is entirely my point - logic would say that's exactly what this toggle if for, but it doesn't work. So it's a bug (that hopefully is being fixed).

Or if that's not what the toggle is supposed to do, what on earth is it for? Apple UI is normally pretty literal and I really can't think of another obvious answer.

Jclind66 wrote:

My wife and I have separate ids for messaging and face time but share an id for everything else so we have a shared calendar and notes there is currently no way to separate the phone from the calendar and notes like there is with messaging. Apple needs to fix this ASAP.

I wouldn't hold your breath, if I was you. Apple had made it clear, two people should never share the same Apple ID. They even published a Support Article about this --> Make sure that each family member has a unique Apple ID - Apple Support

You can share your feedback with Apple, but they won't respond to you, and it's clear it's working exactly as Apple designed and intended it to work.

Rick Rush wrote:

All we are asking Apple to do is to fix the phone toggle in iCloud so when it is off the call logs are not stored in iCloud.

Telling us, only users on a user to user only forum is telling Apple nothing. Use the link KiltenTim provided, but I still have extremely high doubt Apple will change this. They don't want people to share an Apple ID, period.

Because Apple doesn't support the sharing of Apple ID's on multiple iPhones. This change is just one more way Apple seems to be emphasizing this isn't advisable. Feel free to call Apple and ask them if they advise using the same Apple ID on two iPhones. They'll tell you no they don't.

Please show me one place where they say that they do not want people to use the same Apple ID on two phones. Sure, they recommend against sharing your Apple ID with other people, but this is not the same thing at all. The change is actually the result of the new voicemail features, which requires calls to go through the cloud first so it can be filtered. This is the result. According to Apple's tech support, that's why it's there. It has nothing to do with them trying to stop people from sharing IDs on two phones that they own. They have never said that. As a matter of fact, at one point they said that is what customers wanted. You're suggesting that this is Apple's way of trying to disuade people from using two phones with the same Apple ID, ie a punishment. Yet, sharing an Apple ID is the only way to use things like AirPods on two devices, or AirTags, or or or....

Still though, let's keep this technical. What is the point of the Phone slider in the iCloud settings?

Since updating to 17.2 yesterday afternoon, call history syncing appears to have stopped for me. Hoping it stays that way. I didn’t do anything special aside from disabling “Phone” from apps using iCloud.

I’ll be keeping an eye on it of course.

IdrisSeabright wrote:

D1abolic wrote:

Soooo, is it Apple doesn’t want us sharing IDs with others, or that they don’t want us using them on more than one device?

Apple really does want one person using an Apple ID across all of their devices. It's how things like Continuity work.

Work seamlessly across all your devices - Apple Support

They appear to want (one person, one role) using the same Apple ID across all of their devices.

If you are doing things both for an employer, and for yourself, then using the same Apple ID for both means that you are potentially sharing everything between both roles.

A business that is being very strict about security will not like this, because it might "leak" their stuff into your personal devices; and likewise, if you share an ID and let a business exercise some control over your devices – because you're using them for company stuff – they get unwanted leverage over your private stuff, too.

Now perhaps there ought to be a way to log in with TWO or more Apple IDs on the same phone at a time … to allow one phone to handle both work and home calls, both work and home calendars, etc. while keeping roles isolated from each other.

I suspect that would involve rather major user interface and engineering challenges, which is why we have not seen it done to date.

Servant of Cats wrote:

IdrisSeabright wrote:

D1abolic wrote:

Soooo, is it Apple doesn’t want us sharing IDs with others, or that they don’t want us using them on more than one device?

Apple really does want one person using an Apple ID across all of their devices. It's how things like Continuity work.

Work seamlessly across all your devices - Apple Support

They appear to want (one person, one role) using the same Apple ID across all of their devices.

If you are doing things both for an employer, and for yourself, then using the same Apple ID for both means that you are potentially sharing everything between both roles.

Not potentially sharing. That’s actually sharing everything.

And an employer that requires that—and that degree of data and device control can be a reasonable requirement for specific situations—means the employer effectively owns that iPhone, if not actually owns that iPhone.

Mixing personal and employer data isn’t a great strategy for an employee either, same as mixing together the data of multiple people.

Pragmatically, if somebody really wants to control a device and wants to control what a user of a device can do, then provision the device. Sorta-kinda splitting up the data doesn’t work, as this twenty-seven-page effort to try to do that should make clear.

Best case here, Apple provides tools to partition and migrate shared data into separate Apple IDs, and to better design or better document the existing calendar and contacts sharing. Marginal case (for some of the folks here in the twenty-seven page thread) is a switch to isolate some of the sharing. Isolation which likely then all starts to look like the mess that is Focus and Screen Time and Parental Controls, but, well, worse, because the architected means to separate this data is the Apple ID. Whether that separation is role-based (work and home) or is separation for multiple people.

throwarockatme wrote:

As of this morning my call logs have resumed syncing unfortunately. 17.2 doesn’t appear to have been the answer.

Back to waiting for an actual fix.

You may be waiting forever for an actual fix. Apple clearly doesn't see this as an issue when two people share the same Apple ID.

Yes, log out of the apple ID on the phone you don't want anything syncing to and stay logged out, thats the easiest.

you actually do not need a apple ID to use the phone if you are using the second one for work. Two personal phones? Create separate ID’s

lobsterghost1 wrote:

You're going to find out this is a short term solution, which almost everyone has performed doesn't work long term and within hours or a day, doesn't work. Come back in a couple days and report the results, if you would.

The one thing that sounds different about the suggestion is rebooting both iPhones after changing the setting of the iCloud Phone switches.

I have no idea whether it is actually going to make a difference in terms of long-term behavior, but it is somewhat plausible that the effect of the switch only "takes" after rebooting the phone. IF the purpose of the switch has to do with the call logs. (There still doesn't seem to be any clear explanation from Apple themselves as to what the purpose of this new switch actually is.)

I had the two people in my office who share the same Apple ID, Force Restart both iPhones after turning off phone in iCloud and nope. Didn't make a difference. And let's face it, at some point anyone who does this will have to update their iPhone, so any momentary success will be wiped as Apple apparently is not interested in altering the merged call logs/voicemail messages on shared Apple IDs. People need to either accept it or separate. I don't get why a couple who share an Apple ID would be upset about this to begin with? They've ALWAYS had the ability to read each others text messages without the other's permission or even knowledge.

You don't understand. You are the one who chooses to share an Apple ID and the ONLY way to stop merged call logs and voicemail is stop sharing an Apple ID. Whatever your use case is irrelevant if you don't appreciate sharing call logs. It's that simple.