I pull an hourly UV index forecast in my app via WeatherKit, but I’ve noticed it flips back and forth between two "stable" forecasts throughout the day, as if the data source is switching between providers, as a result giving a sense of instability in the presented forecast. Is there any way to lock or specify a single forecast source for greater consistency? I have a feature that notifies users when the UV index crosses a set threshold, but these repeated “back-and-forth” changes trigger multiple alerts that feel spammy and unreliable. Any advice or best practices for handling this would be greatly appreciated.

0 0x102501788 __assert_rtn + 160 1 0x102504570 ld::tool::SymbolTableAtom<x86_64>::classicOrdinalForProxy(ld::Atom const*) (.cold.3) + 0 2 0x10243bdb0 ld::tool::SymbolTableAtom<x86_64>::classicOrdinalForProxy(ld::Atom const*) + 172 3 0x10243cc24 ld::tool::SymbolTableAtom::addImport(ld::Atom const*, ld::tool::StringPoolAtom*) + 140 4 0x10243e508 ld::tool::SymbolTableAtom::encode() + 396 5 0x1024303b0 ___ZN2ld4tool10OutputFile20buildLINKEDITContentERNS_8InternalE_block_invoke.413 + 36 6 0x1886efb2c _dispatch_call_block_and_release + 32 7 0x18870985c _dispatch_client_callout + 16 8 0x1887264cc _dispatch_channel_invoke.cold.5 + 92 9 0x188701fa4 _dispatch_root_queue_drain + 736 10 0x1887025d4 _dispatch_worker_thread2 + 156 11 0x1888a3de4 _pthread_wqthread + 232 A linker snapshot was created at: /tmp/iCSee.debug.dylib-2025-09-18-165226.ld-snapshot ld: Assertion failed: (it != _dylibToOrdinal.end()), function dylibToOrdinal, file OutputFile.cpp, line 5196. clang++: error: linker command failed with exit code 1 (use -v to see invocation)

I'm sitting at my house and trying to sign my test device out of my apple ID so I can sign into a Sandbox user, but now I have an hour to kill because of this terribly broken "security" feature that thinks it's in an unfamiliar location, despite being at the only location it's ever known. Looks like I'll just be disabling this feature all together. Especially as a device with Developer Mode enabled, which gets reset regularly, there should be additional options here. Come on!

I have prepared a NSSpellServer spelling and grammar checker for Slovenian proofing in macOS. My proofing service gets used when I explicitly set keyboard spelling language to "Slovenian (Besana)" (my proofing tool). When I set keyboard language to Automatic by Language, system does the language detection. Since it has limited support for Slovenian language, it doesn't recognize the text as Slovenian and never asks my proofing service to check the spelling. It does consult my proofing service for spelling suggestions and when it does, I see the language parameter there is set to anything but Slovenian. Is it possible to install own language detector to macOS? Or, place some language dictionary files somewhere, the system could use to extend language detection to new languages?

我完全复用了官方wwdc的Alarmkit的demo。测试过程发现12，13pro闹钟完全正常，15pro和16pro闹铃时间不对，经常不响，而且在设置中切换市时区时会立马响。这是api的bug么

Hello Having trouble getting associated domain to work in our project. It was working when we used Branch, but our company wants to host the domain ourselves. This is a multi-scheme project, using .xcconfig files to define the correct entitlement per Build. The relevant entitlement file has: com.apple.developer.associated-domains applinks:bm.ddcas.ai in the ....{other irrelevant test associated domains....} The project Team and App ID are taken from the Identifiers screen where the Identifier capabilities has 'associated domains' ticked on. I've also checked elsewhere on AppleDeveloper/Connect to be sure. When we used Branch with domain key app links: bmstores.app.link this worked fine. With https://bm.ddcas.ai (our own host) which is publicly available and has an aasa file in both the main directory and /.well-known, typing this in safari or anything just doesn't attempt to link to the App. The iPhone is in developer mode, and using the developer menu associated domains diagnostic tool, typing https://bm.ddcas.ai results in the diagnostic saying 'The url is a Universal Link for the app with identifier **********.***etc (the app is installed on real iPhone 12, iOS 18.6.2 and my Xcode is 16.4) However, it just doesn't work if we type in https://bm.ddcas.ai and results in a Safari message of '400 not found' and the 'nginx' shows. We have read innumerable Apple Dev posts and StackOverflow posts, as well as several step by step 'how to's' online but this just isn't working. The aasa file is at https://bm.ddcas.ai/apple-app-site-association and is setup as follows: { "applinks": { "apps": [], "details": [ { "appID": "{my Team ID}.{my App ID}", "paths": [ "*" ], "components": [ { "/": "/verification", "?": { "verification_code": "[A-Za-z0-9]{6}" }, "comment": "Matches verification code path" } ] } ] } } Our Server guys say the website (bm.ddcas.ai) is public and hosted, it just doesn't have a /verification path as they say it should redirect before reaching that. Also, our Android redirect works using this site, so this appears to be something specific Apple code is looking for. What, please, are we likely to be missing as it does not seem obvious from the Apple documentation or any of the resources I have checked online. Normally we can figure anything out, but getting nowhere here so the help is appreciated.

If I run an app with a message filter extension, it's triggered for all the prepaid unknown numbers and its not triggered for all the unknown postpaid numbers. Any idea, how to trigger for postpaid unknown numbers?.

Hi everyone, I’m currently developing a parental control app that uses the Screen Time API (FamilyControls, ManagedSettings, DeviceActivity). I have a question regarding the customization limits of the Shield UI in ManagedSettingsUI. From the documentation, I understand that we can customize the ShieldConfiguration (background color, blur style, icon, title, subtitle, button labels, etc.). However, I’d like to clarify a few points before finalizing the design: 1. Is it allowed (or technically possible) to display custom media content, such as videos, animations, or interactive elements, inside a custom Shield? 2. Are there limitations on the text length for the title and subtitle fields (e.g. maximum number of characters, multiline support, truncation behavior)? 3. Can the Shield be personalized per user (for example, showing a different title or color scheme based on user preferences or device state)? 4. Are there App Store Review restrictions or UI guidelines that define what a Shield should or should not contain (for instance, whether the Shield can resemble a mini-app experience)? I want to ensure that the implementation fully complies with Apple’s technical and design expectations before submission. Thanks in advance for any official clarification or best practices on how far we can go with Shield customization! Best regards, Ferdinand

Has anyone encountered a situation like mine below? I’ve submitted feedback, but it seems like I’ll have to wait for a while. ContactProviderManager Fails with Custom domainIdentifier, Works Only with "defaultDomain" Category: Developer Tools / Frameworks Subcategory: ContactProvider Framework Reproducibility: Always iOS Version: iOS 18.0 (and later) Xcode Version: Xcode 16.0 (or later)  Description: When initializing a ContactProviderManager with a custom ContactProviderDomain using any identifier other than "defaultDomain", the initializer throws a ContactProviderError.domainNotRegistered error. The documentation for ContactProviderDomain (https://developer.apple.com/documentation/contactprovider/contactproviderdomain) does not provide any method to register custom identifiers, making it impossible to use ContactProviderManager with a desired custom identifier. The only successful case is when the identifier is "defaultDomain". print("Error: (error)") // No error, initialization succeeds Steps to Reproduce: Create a Contact Provider Extension in an iOS app targeting iOS 18.0. In host app, Attempt to initialize a ContactProviderManager with a custom ContactProviderDomain identifier: ​import ContactProvider func enableExtensionExample() async {    do {        // The app creates a contact provider manager with custom domain.        let manager =  try ContactProviderManager(domainIdentifier: "com.mycompany.customdomain")               // May prompt the person to enable the custom domain.        try await manager.enable()    } catch {       print("Error: \(error)") // Prints ContactProviderError.domainNotRegistered    } } Try the same with the default identifier: ​import ContactProvider func enableExtensionExample() async {    do {        // The app creates a contact provider manager with a default domain.        let manager =  try ContactProviderManager(domainIdentifier: "defaultDomain")               // May prompt the person to enable the default domain.        try await manager.enable()    } catch {       print("Error: \(error)") // No error, initialization succeeds    } } Build and run the app on a device or simulator running iOS 18.0 or later. Observe that the initializer fails with domainNotRegistered for any identifier other than "defaultDomain". Expected Behavior: The ContactProviderManager should initialize successfully with any valid ContactProviderDomain identifier, provided the domain is properly configured or registered, allowing developers to use custom identifiers for organizing contacts (e.g., for different categories or sources). Actual Behavior: The ContactProviderManager initializer throws ContactProviderError.domainNotRegistered for any ContactProviderDomain identifier other than "defaultDomain". Only the "defaultDomain" identifier succeeds, limiting the ability to use custom domains. Impact: Developers cannot use custom identifiers to categorize or manage contacts in separate domains, restricting the ContactProvider framework’s flexibility. This forces reliance on the "defaultDomain" identifier, which may not suit use cases requiring distinct contact groups (e.g., personal vs. business contacts). Suggested Fix: Provide an API to register custom ContactProviderDomain identifiers, such as a ContactProviderManager.register(domain:) method. Update the ContactProviderDomain and ContactProviderManager documentation to clarify how to use custom identifiers or explicitly state if only "defaultDomain" is supported. If custom identifiers are not intended to be supported, document this limitation clearly to avoid developer confusion. Feedback : FB20104001 (ContactProviderManager Fails with Custom domainIdentifier, Works Only with "defaultDomain")

I want to start the mail application from the development application, but the mail application made by Apple starts. It doesn't work even if I change the default email application to Outlook. When you delete the Apple Mail app, Outlook starts. I want to automatically attach the generated pdf file to the email, but that doesn't work either. Please tell me how to code.

We are using VZVirtualMachine instances in a Swift actor. It works fine but we hit a major problem when we decided that we want to attach it to a VZVirtualMachineView to show it / allow user interactions. VZVirtualMachineView and its virtualMachine property is isolated to @MainActor, so if we directly assign our vm instance to it, we receive a concurrency error: @MainActor public func createView() -> VZVirtualMachineView { let view = VZVirtualMachineView() view.virtualMachine = vm // x: Actor-isolated property 'vm' can not be referenced from the main actor return view } Is there any way we can make this work?

We have an application WAVE PTT(Push to talk) and Application is in foreground state, When a user receives a cellular call and it is in the "ringing" state and application receives a VoIP APNS(video call) which is reported to CallKit. User rejects the Cellular call from CallKit UI, application Video call is also getting rejected (separate feedback - 19017978) and Here the issue is observed that an Application moved to background(OS26 beta 9). Issue is not observed in iOS 18 and older versions. Frequency : 1 out of 3. Please refer the sysdiagnose logs in below reported feedback ID. Feedback Ticket ID: 20187309 Syslogs Snippet reference: default 2025-09-10 12:30:06.991950 +0530 WAVE PTX 0x10e078100 - ApplicationStateTracker: UISceneDidEnterBackground

Hi everyone, I'm working on an app for parents and kids where parents can define screen time goals or restrict usage of certain app categories (like social media or games). If the kid follows those rules—for example, by using their device less or avoiding restricted categories—they would earn points or rewards in the app. I’ve been exploring if the Apple Screen Time API allows developers to access this kind of data (like total screen time, app usage by category, etc.) so that I can track the kid’s behavior and reward them accordingly. Is it possible to programmatically access this data and implement such a reward system within my app? If so, what’s the best way to get started or which APIs should I look into? Thanks in advance for your help!

My ASA file is located here https://staging.docyt.com/apple-appsite-association It downloads fine. It does not have .json extension and neither does it reside inside the ./well-known folder. Should it work? Because opening the link https://staging.docyt.com/reset-password is not opening the app installed via TestFlight . Installing via XCode however works fine. Please help

I want to create a brush similar to a fountain pen, with a three-dimensional feel to the strokes and a distinct tip. Alternatively, is it possible to achieve this by modifying the configuration parameters of a fountain pen brush?

Hello, currently working on messenger with audio/video calls feature. Have found strange behavior, on some devices after accepting call via Lock Screen video button appears to be disabled. Tested on wwdc Speakerbox sample, same code iPhone 15 Pro (iOS 17.4.1) - video button disabled iPhone 14 (iOS 17.6.1) - video button active Here is my, configuration with supportVideo activated static let providerConfiguration: CXProviderConfiguration = { let configuration = CXProviderConfiguration() configuration.supportsVideo = true configuration.maximumCallGroups = 1 configuration.maximumCallsPerCallGroup = 1 configuration.supportedHandleTypes = [.generic] return configuration }() What can be the reason of this behavior? Thanks

I'm currently finding it impossible to get a text filtering extension to be invoked when there's an incoming text message. There isn't a problem with the app/extension because this is the same app and code that is already developed, tested, and unchanged since I last observed it working. I know if there's any history of the incoming number being "known" then the extension won't get invoked, and I used to find this no hindrance to testing previously provided that: the incoming number isn't in contacts there's no outgoing messages to that number there's no outgoing phone calls to the number. This always used to work in the past, but not anymore. However, I've ensured the incoming text's number isn't in contacts, in fact I've deleted all the contacts. I've deleted the entire phone history, incoming and outgoing, and I've also searched in messages and made sure there's no interactions with that number. There's logging in the extension so I can see its being invoked when turned on from the settings app, but its not getting invoked when there's a message. The one difference between now and when I used to have no problem with this - the phone now has iOS 18.5 on it. Its as if in iOS 18.5 there ever was any past association with a text number, its not impossible to remove that association. Has there been some known change in 18.5 that would affect this call filtering behavior and not being able to rid of the incoming message caller as being "known" to the phone? Update I completely reset the phone and then I was able to see the the message filter extension being invoked. That's not an ideal situation though. What else needs to be done beyond what I mentioned above in order to get a phone to forget about a message's number and thus get an message filtering extension to be invoked when there's a message from that number?

Weatherkit stopped again providing next hour rain data for United kingdom and ireland

Is there any way to use the screen time API on Mac?

We've observed an issue where the video button on the CallKit UI is disabled during Video VoIP calls. This issue appears to be specific to notch devices running SDK 26 and iOS 26 beta 7, specifically on iPhone 11. We have not seen this behavior on devices with Dynamic Island or on older iOS versions. For further details, please refer to the attached video and sysdiagnose file. : FB19827793 Our experimentation suggests this issue is exclusively present on non-Dynamic Island devices with iOS 26 beta.