Ok so for some background, our app has a keyboard extension where we run a dictation service. Due to iOS limitations, this requires the user to press a button on the keyboard which will then bring the user to our app to activate an audio session. Once the audio session has been activated, it takes the user back to the original app it came from to continue using the keyboard + dictation service.
The problem we're running into involves iOS 26.0 and the iMessages app. Whenever our app tries to switch back to the iMessages app using Deep Link (specifically the messages:// URL), the iMessages app opens up a new message compose sheet. This compose sheet replaces the view or message thread that the user was previously looking at which we don't want.
This behavior appears to be only happening in iOS 26 and not in any of the previous iOS versions (tested up to iOS 18.6). We know that it should be possible to bring the user back to the messages app without opening up this new compose sheet, because similar apps do the same thing and these apps have been verified to work on iOS 26.
We've tried also using the sms:// URL but that always opens a new message compose sheet regardless of whether or not it's iOS 26.0.
General
RSS for tagDelve into the world of built-in app and system services available to developers. Discuss leveraging these services to enhance your app's functionality and user experience.
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Hi all. Does anyone know if there's a way to get a list of watch faces for a paired Apple Watch or to set the current face? Or is this just not allowed?
I've taken a look at the WatchOS, WatchKit, and WatchConnectivity documentation and no luck there.
Hi,
A lot of e-mail providers supports OAuth2 authentication.
However, Mail.app on macOS and iOS do not support configuring a mail account that would use OAuth2 authentication, unless it's on its hardcoded list of account providers.
Is there any framework that allows setting up a custom account for my institution, so that we could begin to offer OAuth2 authentication for mail and calendar?
One of the responses to a call to AgeRangeService.shared.requestAgeRange is AgeRangeService.Error.invalidRequest.
This has no documentation. What on earth is an invalid request - I mean the app just calls the API, there's no parameters supplied or anything, how can the request ever be invalid?
If the app calls AgeRangeService.shared.requestAgeRange and gets this as a response then what is the app supposed to do with that?
Topic:
App & System Services
SubTopic:
General
According to the documentation, using Scope(restriction: .none) can expose the extension point to third-party app extensions. Below is my implementation, which ultimately results in an error.
Code for declaring the extension point:
@available(iOS 26.0, *)
extension AppExtensionPoint {
@Definition
static var priceExtension: AppExtensionPoint {
Name("priceExtension")
UserInterface(false)
Scope(restriction: .none)
}
}
Code for locating the extension point:
monitor = try await AppExtensionPoint.Monitor(appExtensionPoint: .priceExtension)
When executing the code to locate the extension point, the following error occurs:
However, in practice, I found that declaring the extension point in this way results in an error when trying to locate it:
Error Domain=com.apple.extensionKit.errorDomain Code=19 "Failed to add observer" UserInfo={NSLocalizedDescription=Failed to add observer}
We use call directory extension in one of our applications, we notice that call id is truncated on IOS 18.
Example: "Grady GmbH" instead of "GRADY ARCHIE,
PRICEWATERHOUSECOOPER GMBH"
We notice also if we have calls in the history then the caller id is shown correctly.
Issue only on IOS 18.
Topic:
App & System Services
SubTopic:
General
On iOS 26, calling CXCallDirectoryManager.sharedInstance.openSettings() does not navigate to the “Call Blocking & Identification” settings page as documented. Instead, it either opens the main Phone settings page or fails to navigate entirely. This breaks the expected behavior for enabling Call Directory extensions and impacts onboarding flows for apps using CallKit.
Expected:
Settings should open directly to Phone → Call Blocking & Identification.
Actual:
Navigates to the main Phone settings page
This appears to be a regression from previous iOS versions. Documentation still states this API should open the correct page.
~5% of our users when downloading the iOS application from the Apple Store for the first time are unable to enrol a Passkey and experience an error saying the application is not associated with [DOMAIN].
The error message thrown by the iOS credentials API is
"The operation couldn't be completed. Application with identifier [APPID] is not associated with domain [DOMAIN]"
We have raised this via the developer support portal with case id: 102315543678
Question:
Why does the AASA file fail to fetch on app install and is there anything that can be done to force the app to fetch the file?
Can this bug be looked at urgently as it is impacting security critical functionality?
Other Debugging Observations
We have confirmed that our AASA file is correctly formatted and hosted on the Apple CDN. Under normal circumstances the association is created on install and Passkey enrolment works as intended.
We have observed that when customers uninstall/reinstall the app this often, but not always, resolves the issue. We also know this issue can resolve itself overtime without any intervention.
We have ruled out network (e.g VPN) issues and have reproduced the issue across a number of different network configurations.
We have ruled out the Keychain provider and have reproduced it across a variety of different providers and combinations of.
We observed this across multiple versions of the iOS operating system and iPhone hardware including the latest hardware and iOS version.
Hi There, hopefully someone can help me here, we weren’t aware but our universal links stopped working sometime last year, as they are not used often on the apps, it wasn’t noticed. We checked all the elements and this is the situation:
Our apple-app-site-association file is located at
https://ourdomain.com.au/.well-known/apple-app-site-association
And it is accessible and can be downloaded.
We have Associated Domain services enabled for our app Bundle Id: au.com.identifier.app
The Entitlements.plist in our app contains the list of associated domains - the second is the full url, the portal won't let me write it as such as it's not the real address.
But links for the first two, …ourdomain.com.au domains don’t work
Request https://ourdomain.com.au/.well-known/apple-app-site-association downloads the file and returns status code:403
While checking the availability with
https://app-site-association.cdn-apple.com/a/v1/ourdomain.com.au
we get the error:
ourdomain.com.au: Failed to load resource: the server responded with a status of 404 (Not Found)
Going directly to the hosted website:
https://app-site-association.cdn-apple.com/a/v1/ourdomain-prod-ourdomainwebsite.azurewebsites.net
Returns the json:
{
"activitycontinuation": {
"apps": [
"99ABCD88XXX.au.com.identifier.app",
"99ABCD88XXX.au.com.identifier.server.adhoc",
"99ABCD88XXX.au.com.identifier.server.dev"
]
},
"applinks": {
"apps": [],
"details": [
{
"appID": "99ABCD88XXX.au.com.identifier.app",
"paths": [ "/m/" ]
},
{
"appID": "99ABCD88XXX.au.com.identifier.server.adhoc",
"paths": [ "/mt/" ]
},
{
"appID": "99ABCD88XXX.au.com.identifier.server.dev",
"paths": [ "/md/*" ]
}
]
}
}
It appears to be something in the redirect from the url but debugging shows nothing obvious. Has anyone experienced this before?
Thanks
Topic:
App & System Services
SubTopic:
General
Explanation of the issue
When tethering is enabled and a wireless connection is established,
there are instances where an IP address is not assigned.
Steps to Reproduce the Issue (if possible)
Enable iPhone tethering and connect wirelessly using 11ax.
Expected Result
The iPhone assigns an IP address, enabling network connectivity.
Actual Result Observed
DHCP negotiation failed.
After attempting communication with the DHCP server via DHCP Discover, a DHCP Offer was returned from the iPhone.
If this was missed, it would retry by performing another DHCP Discover.
However, the iPhone does not issue a DHCP Offer no matter how many times it retries.
The IP address is not assigned unless the wireless connection is disconnected and reconnected.
If the initial Discover is missed, does this invalidate subsequent Offer retries?
The above issue has been confirmed on iPhone 17 Pro and iPhone 16. It does not appear to occur on iPhone 15.
Hello,
I have a question about data deserialization using NSKeyedUnarchiver in iOS SDK development.
Current Situation:
Previously, we were using the NSKeyedUnarchiver.unarchiveObject(with: Data) function
We have changed to using the NSKeyedUnarchiver.unarchivedObject(ofClasses:from:) method to deserialize complex objects stored in UserDefaults
We need to include all types in the ofClasses parameter, including Swift primitive types as well as various custom classes and structs within the project
Questions:
Implementation Approach: Is it correct pattern to include all classes defined in the project in the ofClasses array? Is this approach recommended?
Runtime Stability: When using this approach, is there a possibility of runtime crashes? Are there any performance issues?
Alternative Methods: If the current approach is not the correct pattern, what alternatives should we consider?
Current Code Structure:
All model classes conform to the NSSecureCoding protocol
We use the requiringSecureCoding: true parameter
We use a whitelist approach, explicitly listing only allowed classes
I would like to know if this structure is appropriate, or if we should consider a different approach.
Thank you.
We are not receving incoming call from blocked numbers below iOS 26 versions but same in iOS 26 onwards we are receiving the incoming call..
Can you please provide any solutions to fix the issue
Its possible to add the Declared Age Range entitlement to extensions, in particular I'm looking at a Notification Service Extension.
However the DAR requestAgeRange() API takes a view controller as a parameter. Presumably therefore its not possible for a notification service extension to obtain the age range itself directly?
Yes the extension can read it from shared groups if the app reads it and set it into the group. However the scenario I'm thinking of is this:
App runs and gets the age range. Sets its functionality accordingly.
The server sends pushes which are intercepted by the notification service extension, the extension adjusts its functionality based upon what the app wrote to shared groups
The user changes the age range setting, but the app doesn't run.
The extension keeps receiving pushes but its functionality is now out of sync with the age range as its not able to obtain it directly
Topic:
App & System Services
SubTopic:
General
Some Apple URL schemes are documented for third-party use. It’s fine to use those URL schemes for their intended purpose.
Other Apple URL schemes are not officially documented. Their use is unsupported. If you rely on such implementation details, things might work, or they might not, and that state might change over time.
IMPORTANT If you ship via the App Store, pay attention to clause 2.5.1 of the App Review Guidelines.
The Apple URL scheme documentation is not always easy to find. I’m aware of the following:
Apple URL Scheme Reference
QA1924 Opening Keyboard Settings from a Keyboard Extension [This Q&A was retired years ago.]
Preparing your app to be the default messaging app
The doc comments for es_new_client in <EndpointSecurity/ESClient.h>
Developer > Bug Reporting describes the applefeedback scheme
Additionally, as questions about this most commonly crop up in the context of opening Settings (System Settings on macOS), I wanted to highlight the following:
UIApplication.openSettingsURLString property (in Objective-C this is UIApplicationOpenSettingsURLString)
UIApplication.openNotificationSettingsURLString property (in Objective-C this is UIApplicationOpenNotificationSettingsURLString)
UIApplication.openDefaultApplicationsSettingsURLString property (in Objective-C this is UIApplicationOpenDefaultApplicationsSettingsURLString)
AccessibilitySettings.openSettings(for:) method
FIFinderSyncController.showExtensionManagementInterface() class method
SMAppService.openSystemSettingsLoginItems() class method
VSOpenTVProviderSettingsURLString global
CXCallDirectoryManager.openSettings(completionHandler:) method
If your app needs to perform some action that’s not covered by the above, file an enhancement request for a supported way to do that. Make sure to describes your use case in detail.
Share and Enjoy
—
Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"
Revision History
2025-10-28 Added a reference to UIApplication.openDefaultApplicationsSettingsURLString. Made other minor editorial changes.
2025-04-21 Added a reference to CXCallDirectoryManager.openSettings(completionHandler:).
2024-10-25 Added a reference to UIApplication.openNotificationSettingsURLString and VSOpenTVProviderSettingsURLString. Added a link to Preparing your app to be the default messaging app.
2024-10-01 Added info about the applefeedback URL scheme.
2024-09-29 Added a reference to SMAppService.openSystemSettingsLoginItems().
2024-09-27 Added a titbit for Finder Sync extension developers. Added an invitation to file feedback.
2024-08-05 First posted.
My app is a VoIP softphone for Mac that allows people to make phone calls to a regular phone numbers. The app exists since before Mac App Store. The app declares itself to the system as capable of handling tel: URLs. Until now, people could change the default handler for tel URLs in FaceTime settings (Default for calls).
In macOS Tahoe 26, this doesn't seem to be possible any more. That option is gone from the FaceTime settings.
Is it completely gone or has it been moved somewhere else? If there is no UI control for this any more, is it possible to change it programmatically?
Subject: Call Directory Extension Enable Failure for Individual User
Dear Apple Developer Support,
We are experiencing an issue with our Call Directory Extension where one specific user cannot enable it, while thousands of other users on the same iOS version can enable it successfully.
Issue Details:
App: 美信 (Midea Connect)
Problem: Extension fails to enable with error: "请求'美信'的数据时失败" (Failed to request data from app)
Affected: 1 user out of thousands
iOS Version: 26.0.1
What Works:
All other users can enable the extension normally
Same iOS version, no issues
App Group and Extension identifier are correctly configured
User Has Tried:
Reinstall app - No effect
Toggle extension off/on - Still fails
Restart device - No improvement
When an alarm is scheduled for 00:00, the system displays the fullscreen alarm interface twice.
After the second fullscreen view appears, both the “Stop” and “Snooze” buttons become unresponsive, but using the physical button (volume or power button) can dismiss the alarm and correctly trigger the StopIntent.
This behavior occurs consistently (100%), whether the system time is set normally or manually adjusted before the alarm triggers.
Environment:
Device: iPhone 14 Pro Max
iOS Version: 26.0
Reproducibility: 100%
Topic:
App & System Services
SubTopic:
General
Hi Guys,
I've been wanting to make a bettermouse-like tool for some time now, but I can't figure out how to modify mouse events to do it. I've managed to get mouse events, like the cursor moving, but I can't seem to modify them. What I try either creates a feedback loop, does absolutely nothing, or makes the cursor have a seizure. Any help is appreciated!
Topic:
App & System Services
SubTopic:
General
Hi,
As a company, we have several apps in the AppStore that contain AppClips.
With the latest iOS18 it works without any problems.
With all iOS26 betas so far, however, there is always the problem “ASDErrorDomain- Error 507” and the AppClip cannot be opened.
You can easily test this by scanning the following QR code with the system camera:
You only ever get this error instead of the option to open the AppClip.
As the iOS26 beta phase is already at an advanced stage, we are naturally concerned as to whether the problem will be solved.
Hello,
Back in January 2024, I filed a bug report regarding a cache being kept by the macOS Wallpaper Agent. This cache contains every image ever set as a users wallpaper, and at the time the issue was reported, it never cleared, leaving hundreds of gigabytes wasted on users disks in some cases.
FB13536275
This issue was ultimately fixed in macOS 15.1 beta 6, and remained fixed for the duration of macOS 15. The fix was excellent - the cache was reduced to storing just 2-3 days worth of images.
Sadly, we've discovered that this issue is back in macOS Tahoe. The cache has moved locations, and once again is not clearing. We have filed this bug again, less than a year after it was first fixed:
FB20636593
We develop an app called 24 Hour Wallpaper that keeps the wallpaper in sync with the time of day. This necessitates that the app regularly changes the wallpaper, which sadly now results in an infinitely growing and useless cache of BMP files generated by the system.
As we waited 10 months for this to get fixed the first time, we expect to wait at least that long to get it fixed again, and have no confidence that it will stay fixed because the last fix lasted less than a year. This leaves us in a bad position, as people can't use our app without the cache growing arbitrarily and ultimately completely filling their disk.
We've already had customers call Apple to complain about this, and the good news is that the support agents understand that this is a problem with macOS, not with our app.
What we've decided to do is add a feature to the app that monitors the size of this cache and periodically deletes it. We're required to get the users permission the first time to do this, but after that the permission is cached, so the app can keep the cache folder clean regardless of if macOS is doing it's job or not.
We haven't seen any side effects or problems as a result of doing this. We've seen other apps like CleanMyMac do this without any problems. We're wondering if there is anything we should be aware of regarding this caches behavior before releasing this flushing feature.
Thanks for your time,
-josh