We have developed an application using xamarin forms , our iOS app is working fine till iOS17 , if we upgraded our OS version to iOS18 app is not working properly. Visual studio for Mac 2022 Xcode 16 Minimum OS version 15.4 Xamarin.iOS version 16.4.023

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")

Since iOS 18.3.1, In lower iOS versions it works fine though. QLPreviewController shows a blank white screen instead of showing the document. Additionally, it does not display the 'Done' option at the top-right to close the view. Presenting the QLPreviewController works fine to display the document, but for the second time, it renders the blank white screen as described. While launching QLPreviewControllerView for the first time. I'm receiving the following message in the console and it displays the document. LaunchServices: store (null) or url (null) was nil: Error Domain=NSOSStatusErrorDomain Code=-54 "process may not map database" UserInfo={NSDebugDescription=process may not map database, _LSLine=72, _LSFunction=_LSServer_GetServerStoreForConnectionWithCompletionHandler} Attempt to map database failed: permission was denied. This attempt will not be retried. Closing the QLPreviewController with the help of the 'Done' option from top-right or swipe to close triggers the following message in the console. Connection to appex interrupted AX Lookup problem - errorCode:1100 error:Permission denied portName:'com.apple.iphone.axserver' PID:1022 ( 0 AXRuntime 0x00000001d2cd7758 _AXGetPortFromCache + 796 1 AXRuntime 0x00000001d2cdd02c AXUIElementPerformFencedActionWithValue + 700 2 UIKit 0x0000000258cdf488 7F0274D9-D3C9-3193-B606-1C74BE53B86C + 1537160 3 libdispatch.dylib 0x0000000101bb888c _dispatch_call_block_and_release + 32 4 libdispatch.dylib 0x0000000101bba578 _dispatch_client_callout + 20 5 libdispatch.dylib 0x0000000101bc2454 _dispatch_lane_serial_drain + 840 6 libdispatch.dylib 0x0000000101bc325c _dispatch_lane_invoke + 408 7 libdispatch.dylib 0x0000000101bd06fc _dispatch_root_queue_drain_deferred_wlh + 328 8 libdispatch.dylib 0x0000000101bcfd0c _dispatch_workloop_worker_thread + 580 9 libsystem_pthread.dylib 0x0000000225ea4680 _pthread_wqthread + 288 10 libsystem_pthread.dylib 0x0000000225ea2474 start_wqthread + 8 ) Trying to open he document again, Ultimately results in the white blank screen to be displayed with no options to close. It displays the Navigation bar only for the fraction of time. Leading users to force close the app and start again.

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.

Hi folks, We are trying to develop a widget on iPhone control center. We follow the Apple design guideline to export our resource file using custom icon and the button icon always show on debug build. However, when we deploy to TestFlight, under some scenario, such as app upgrade, we found that the icon image disappear occasionally. Anyone could help? Thank you in advance!

Hi all, Pretty new here, so please remember when you were trying hard. I am creating an IOS app that will generate a link where you have a room-id and a unique id. This will be sent (normal sms. email, copy/paste values etc) to another user. If the person receiving the link does not have the app installed, I would like it to go to the app store for download, however the app is currently not finished and therefore I can't provide a proper link. How do you deal with that? Thanks in advance

I'm unable to have stickers show in messages even with a new iOS app and a sticker pack extension target. I do see the iMessage App Icon but after tapping it nothing shows and I see a warning: "Error creating the CFMessagePort needed to communicate with PPT" This was tested on simulator and on real device. Xcode 16.1 (16B40) iOS 18.1 & 18.2

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

Hello, I am developing a messaging filtering app (F-Secre) that includes a Message Filter Extension. The extension correctly identifies and filters spam SMS/iMessage. In iOS 18, when a message was filtered into the Junk folder, the Messages app would correctly display a label beneath it indicating it was filtered by our product, e.g., “Junk filtered by F-Secre”. After updating to the iOS 26 beta (26.0 (23A5330a)), the filtering functionality itself still works—messages are correctly moved to the Junk folder. However, the branding attribution ("filtered by F-Secre") is now missing. The message appears in the Junk folder with no indication of which extension filtered it. This is a regression in user experience, as it removes visibility and credit for our app's work and might confuse users about whether the filtering system is active.

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

right now it looks like the app type must follow the guidelines like Messenger app, Navigate app, and Music app only. What about the Automotive app itself, What is the flexibility of it? We have an app for service cars for one brand (officially)(car users around 1m+). but we looking to merge the experience between outside the car and inside the car. Can we top up some features on the app to share some information that is a part of the car like trip calculation or car info display on the screen? or services time to notice them? And following that question can we know about the exact spot or brief from Apple car play for now and next-gen? Or can we work with your team closely as a partner? to make things happen and develop it to be a flagship product, we can share some data and talk about it with real insight.

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.

Is CallKit still not available in certain countries? like China? If it is, is there a way to get a list of countries?

Hello, I noticed the new entitlement in iOS 26 under LiveCommunicationKit: Preparing your app to be the default dialer app. My question is about eligibility: If a developer account is registered in the EU, can any app add the Default Dialer capability, or is it restricted only to apps that provide real calling/communication functionality (e.g., WhatsApp, Telegram, Skype)? If granted, does this capability allow the app to make/receive cellular calls and access call history, or is it limited only to VoIP-style scenarios through CallKit integration? What are the minimum functionalities required to support this feature (e.g., having a dial pad, call history screen, etc.)? Why must the developer account be registered in the EU to use this entitlement? Thanks in advance for the clarification!

I'm trying to implement live caller id PIR server in python and I have an issue related to evaluation key config. I don't receive the POST /key request even if I try to install the extension on new device and I had this error in device system logs: error 11:21:30.663022+0200 ciphermld requestData(byKeywords:shardIds:clientConfig:) threw an error: CipherML.CipherMLError.missingSecre t Ke y I think the reason why the evaluation key is not generated is related to this error but I'm not sure. It might be also related to HE params - I tried with the same params as in swift server example with plaintext_modulus=17 and it works, but for plaintext_modulus=65537 on the same device the system doesn't send me the evaluation key. Is there a limitation that restricts the evaluation key generation for some HE params? There is how the entire config object that I retrieve looks like: { "configs": { "Live-C aller-ID-Lookup. TestLiveCallerI D.iden tity": { "pir_config": { "encry ption_p aram eters": { "pol ynomial_deg ree": "4096", "plaint ext_mo dulus": "65537", "coeff icient_m oduli": [ "134176769", "268369921", "268361729" ], "secu rity_le vel": "SECU RITY LEVEL QUANT UM128", "h e_sc heme": "H E_SC HEM E_B F V" }, "shard_configs": [ { "num_entries": "2", "entry_size": "55991", "dimensions": [ "2", "1" ], "shard_id": "" } ], "keyword_pir_params": { "num_hash_functions": "2", "sharding_function": { "sha256": {} } }, "algorithm": "PIR _ALGO RITHM _MUL_PIR", "batch_size": "2", "evalu ation_ke config_hash": "" }, "config_id": "" } }, "key_info": [ { "timestamp": "1738660849", "key_config": { "encryp tion_par ameters": { "polynomial_degree": "4096", "plaintex t_mo dulus": "65537", "coeffic ient_m oduli": [ "134176769", "268369921", "268361729" ], "secu rity_level": "SECUR ITY_LEVEL_QU ANTUM128", "he_sc heme": "HE_SC HEME_BFV" }, "gal ois_e lements": [ 20 49, 40 97 ], "has _rel in_key": true } } ] } PS evaluation key data is just a placeholder, but anyway it should be skipped cause of expired timestamp More logs: ```language default 11:21:30.535865+0200 ciphermld Running rotation task for ["Live-Caller-ID-Lookup.TestLiveCallerID.identity"] info 11:21:30.535953+0200 ciphermld Skipping groups that manage their own networking: <private> default 11:21:30.537007+0200 ciphermld Request to fetchConfigs has started for useCases '["Li ve-Caller-ID-Lookup.TestLiveCallerID.identity"]', userId: '<private>', existingConfigIds: '["id"]' default 11:21:30.542174+0200 ciphermld Request to queries-batch has started for userId: '<private>', length: 28350 default 11:21:30.655914+0200 ciphermld Request to fetchConfigs has finished, response length: 230 default 11:21:30.656182+0200 ciphermld Received configurations: 1 usecase(s), 1 key(s) for group 'Live-Caller-ID-Lookup.TestLiveCallerID.identity' debug 11:21:30.660868+0200 ciphermld Skipping non-active key: timestamp: 1738660849 key_config { encryption_parameters { polynomial_degree: 4096 plaintext_modulus: 65537 coefficient_moduli: [134176769, 268369921, 268361729] security_level: Quantum128 he_scheme: BFV } galois_elements: [2049, 4097] has_relin_key: true } error 11:21:30.662982+0200 ciphermld No key for use-case 'Live-Caller-ID-Lookup.TestLiveCallerID.identity' error 11:21:30.663022+0200 ciphermld requestData(byKeywords:shardIds:clientConfig:) threw an error: CipherML.CipherMLError.missingSecre t Ke y default 11:21:30.663824+0200 com.apple.CallKit.CallDirectory <private> XPC request complete, results(0) error:Error Domain=CipherML.CipherMLError Code=32 "missing secre t ke y" UserInfo={NSLocalizedDescription=missing secre t ke y} default 11:21:30.972372+0200 ciphermld Request to queries-batch has finished response, length: 0 default 11:21:30.974711+0200 com.apple.CallKit.CallDirectory <private> XPC request complete, results(1) error:(null) default 11:21:36.161964+0200 com.apple.CallKit.CallDirectory <private> Sending XPC request default 11:21:36.163149+0200 com.apple.CallKit.CallDirectory <private> Sending XPC request default 11:21:36.169931+0200 ciphermld requestData(byKeywords:shardIds:clientConfig:) method was called default 11:21:36.170448+0200 ciphermld requestData(byKeywords:shardIds:clientConfig:) method was called default 11:21:36.174001+0200 ciphermld Cached: 0 / Missing: 1 error 11:21:36.174997+0200 ciphermld No userId or secre t Ke y for use-case '.Lve-Caller-ID-Lookup.TestLiveCallerID.identity'. Running rotation task' default 11:21:36.175075+0200 ciphermld Running rotation task for ["Live-Caller-ID-Lookup.TestLiveCallerID.identity"] info 11:21:36.175240+0200 ciphermld Skipping groups that manage their own networking: <private> default 11:21:36.177700+0200 ciphermld Request to fetchConfigs has started for useCases '["Live-Caller-ID-Lookup.TestLiveCallerID.identity"]', userId: '<private>', existingConfigIds: '["id"]' default 11:21:36.179914+0200 ciphermld Request to queries-batch has started for userId: '<private>', length: 28350 default 11:21:36.336051+0200 ciphermld Request to fetchConfigs has finished, response length: 230 default 11:21:36.336308+0200 ciphermld Received configurations: 1 usecase(s), 1 key(s) for group 'Live-Caller-ID-Lookup.TestLiveCallerID.identity' debug 11:21:36.341522+0200 ciphermld Skipping non-active key: timestamp: 1738660849 key_config { encryption_parameters { polynomial_degree: 4096 plaintext_modulus: 65537 coefficient_moduli: [134176769, 268369921, 268361729] security_level: Quantum128 he_scheme: BFV } galois_elements: [2049, 4097] has_relin_key: true } error 11:21:36.356497+0200 ciphermld No key for use-case 'Live-Caller-ID-Lookup.TestLiveCallerID.identity' error 11:21:36.356669+0200 ciphermld requestData(byKeywords:shardIds:clientConfig:) threw an error: CipherML.CipherMLError.missingSecre t Ke y default 11:21:36.357075+0200 com.apple.CallKit.CallDirectory <private> XPC request complete, results(0) error:Error Domain=CipherML.CipherMLError Code=32 "missing secre t ke y" UserInfo={NSLocalizedDescription=missing secre t ke y} default 11:21:36.625701+0200 ciphermld Request to queries-batch has finished response, length: 0 default 11:21:36.626749+0200 com.apple.CallKit.CallDirectory

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 seeking guidance on an issue with my iOS app’s universal link for email verification. The link successfully opens my app, but the verification logic never runs. Here is my setup and the problem details: Associated Domains & AASA I have Associated Domains set to applinks:talkio.me in Xcode. The AASA file is located at https://talkio.me/.well-known/apple-app-site-association with the following contents: { "applinks": { "apps": [], "details": [ { "appID": "VMCWZ2A2KQ.com.elbaba.Flake2", "paths": [ "/verify*" ] } ] } } The direct link we send in the email looks like: https://talkio.me/verify?mode=verifyEmail&oobCode=XYZ&apiKey=ABC When tapped, the app launches, but the universal link handler code below never logs the URL nor triggers the verifyEmailUsing logic. SceneDelegate Logic In my SceneDelegate.swift, I handle universal links in both scene(:willConnectTo:options:) and scene(:continue:userActivity:restorationHandler:): func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) { // ... if let urlContext = connectionOptions.urlContexts.first { let url = urlContext.url print("SceneDelegate: App launched with URL: (url.absoluteString)") handleUniversalLink(url: url) } } func scene(_ scene: UIScene, continue userActivity: NSUserActivity, restorationHandler: @escaping ([UIUserActivityRestoring]?) -> Void) -> Bool { print("⚠️ scene(_:continue:) got called!") guard let url = userActivity.webpageURL else { print("No webpageURL in userActivity.") return false } print("SceneDelegate: Universal Link => (url.absoluteString)") handleUniversalLink(url: url) return true } private func handleUniversalLink(url: URL) { let urlString = url.absoluteString if let oobCode = getQueryParam(urlString, named: "oobCode") { verifyEmailUsing(oobCode) } else { print("No oobCode found => not a verify link.") } } // ... Expected Log: SceneDelegate: App launched with URL: https://talkio.me/verify?mode=verifyEmail&oobCode=XYZ&apiKey=ABC However, I only see: SceneDelegate: sceneDidBecomeActive called No mention of the universal link is printed. Result: The app opens on tapping the link but does not call handleUniversalLink(...). Consequently, Auth.auth().checkActionCode(oobCode) and Auth.auth().applyActionCode(oobCode) are never triggered. What I Tried: Verified the AASA file is served over HTTPS, with content type application/json. Reinstalled the app to refresh iOS’s associated domain cache. Confirmed my Team ID (VMCWZ2A2KQ) and Bundle ID (com.elbaba.Flake2) match in the app’s entitlements. Confirmed the link path "/verify*" matches the link structure in emails. Despite these checks, the universal link logic is not invoked. Could you help me identify why the link is not recognized as a universal link and how to ensure iOS calls my SceneDelegate methods with the correct URL? Any guidance on diagnosing or resolving this universal link issue would be greatly appreciated.

I'm working on an app for iOS that will help people get tasks done. Within the app, we use a ManagedSettingsStore to let the user setup distracting apps. When the user opens any of those apps while it is being shielded, our ShieldConfiguration target opens and displays a screen that we configure with the description of the task they are supposed to do. On the bottom of the view, there are two buttons, one to start the task, and another to dismiss and return to their home screen. I want to have the button that starts the task open up the main application and deeplink to the focus view with the task that they started. Currently, the only thing that we can tell the system to do is via a ShieldActionResponse which is an enum with 3 cases: none, close, or defer. None of these three allow us to open the main application. I have found no workarounds that allow us to do it either. I've tried creating a custom URL scheme and calling UIApplication.shared.open(url), but there is no shared application available within the action extension. I have tried using a NSExtensionContext to open a url, but that does not work either. I have even tried starting a live activity to show the user what task they are working on and have a live timer, but that does not work either. I know it is technically possible, because an app I downloaded does it perfectly. The app is called "Ascent: Screen Time Control". Is there some sort of extension I am missing, or entitlement I have not requested? Any help would be very appreciated.

We developing a app called Parentgeenee. It's a Parental control app having any limitations on app block from child mobile. Trying to block more than 500 apps but not blocking if any particular method to block a bulk apps.

Does WeatherKit Rest api have the following forecast endpoints? Pollen and Flu Air quality Radar forecast served through a REST API? Hail Solar energy Frost Potential Index