Delve 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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WeatherKit fails on AppStore
Hello, After being in the AppStore for more than a year with the app working perfectly, yesterday I started seeing that WeatherKit requests failed with Failed to generate jwt token for: com.apple.weatherkit.authservice with error: Error Domain=WeatherDaemon.WDSJWTAuthenticatorServiceListener.Errors Code=2 "(null)" Encountered an error when fetching weather data subset; location=<+41.40217108,+2.20023642> +/- 0.00m (speed -1.00 mps / course -1.00) @ 13/12/25, 12:20:35 Central European Standard Time, error=WeatherDaemon.WDSJWTAuthenticatorServiceListener.Errors 2 Error Domain=WeatherDaemon.WDSJWTAuthenticatorServiceListener.Errors Code=2 "(null)" I checked on developer.apple.com and we still have everything turned on and No changes were made from an already deployed app; and we pay 200$ a month for WeatherKit, this is unacceptable since it's not the first time WeatherKit randomly decides to stop working. More fun facts: the widget works fine...
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Jan ’26
Does Live Caller ID Lookup entirely replace Call SIP content, or are they ever combined?
If an iPhone receives an incoming call with some partial sip content (for example it contains a name but not an image, or vice versa) and if there is an app enabled for Live Caller ID Lookup, and the result of that lookup supplies data not in the sip (i.e. the lookup returns an image, but not a name, or vice versa). Then could the OS combine data from both sources, or is whatever is returned from the LCIDL what gets displayed in the call screen. I suppose that is the case but just want to enquire to make sure. Thank you
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iOS fails to fetch AASA file for IDNs
Subject: iOS Fails to Fetch AASA File for Internationalized Domain Names (IDN) in Unicode or Punycode Format Dear Apple Developer Relations Team And Community Members, We are reporting a critical bug in the iOS Associated Domains feature that prevents Universal Links from working for apps using Internationalized Domain Names (IDN). Problem Description: The iOS operating system does not attempt to download the apple-app-site-association (AASA) file for domains containing non-ASCII characters (e.g., diacritics, Cyrillic). This failure occurs regardless of whether the domain is specified in the app's entitlements in its human-readable Unicode format (e.g., montréal.ca) or its encoded Punycode format (e.g., xn--montral-fya.ca, xn--e1afka0abm4b.xn--p1ai). Without fetching and validating this file, Universal Links are not activated, and the system fails to establish a connection between the website and our app. Steps to Reproduce: Create an app with the Associated Domains entitlement enabled. Add an IDN to the entitlement. We tested both formats: Format A (Unicode): applinks://montréal.ca Format B (Punycode): applinks://xn--montral-fya.ca Host a valid AASA file on our server at the correct, accessible well-known URLs for both domain representations: For montréal.ca: https://montréal.ca/.well-known/apple-app-site-association and https://xn--montral-fya.ca/.well-known/apple-app-site-association Install the app on a device running the latest iOS version. Monitor network traffic using a tool like Charles Proxy. Observed Result: No HTTP GET request is made to any of the AASA URLs for the domains montréal.ca (in either Unicode or Punycode format) upon app installation. The system does not initiate the domain validation process. In contrast, for a standard ASCII domain (e.g., applinks://example.com), the AASA fetch is triggered immediately and is observed in the network log. Expected Result: iOS should correctly resolve the Internationalized Domain Name (whether specified in Unicode or Punycode format in the entitlement) and perform an HTTP GET request to fetch the AASA file from the /.well-known path, identical to its behavior for ASCII domains. Evidence & Configuration: Our server is configured correctly: SSL certificates are valid, the AASA file is served with the correct application/json MIME type, and is directly accessible via a browser or curl. The AASA file's syntax has been validated and is correct. The issue is reproducible on the latest versions of iOS. Impact: This bug blocks a core platform feature for millions of users in regions that use non-Latin scripts (e.g., France, Russia, China, Arab states). It makes it impossible to use Universal Links with our primary domains, severely degrading the user experience and forcing us to seek suboptimal workarounds like registering separate ASCII domains. Request: We kindly request that you investigate and log this issue as a bug in iOS and forward it to the appropriate engineering team for a fix in an upcoming update. We are prepared to provide any additional information, demo projects, or server access to assist in diagnostics. Thank you for your attention to this serious matter.
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Jan ’26
Universal Link Not Working – Apple Request Blocked by Firewall Due to Geographic Restriction
Hello, I’m encountering an issue with Universal Links in my iOS app. After some investigation, I found that the root cause seems to be that Apple’s request through there CDN server to access the .well-known/apple-app-site-association file is blocked by our firewall, which enforces geographic access restrictions as part of our security policy. Because of this restriction, Apple’s validation or link verification requests are being denied, and the Universal Links are not working as expected. I’d like to get some guidance from the community or Apple engineers on the following: 1. Does Apple provide an official list of IP ranges or domains that need to be allowed through the firewall for Universal Link validation? 2. Are there alternative methods to handle Universal Link verification in environments with geographic restrictions? 3. Would whitelisting specific Apple services or endpoints be a recommended or safe solution? Any input or recommendations would be greatly appreciated. Environment Details: • iOS app using Universal Links • Server protected by a firewall with regional restrictions • AASA file hosted correctly and accessible via browser Thanks in advance for your help and insights.
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Nov ’25
Critical Technical Issue: App Update Rendering iPhones Inoperative on iOS 16 Versions
We appreciate your suggestion to use the Apple Developer Forums. However, we must respectfully request further escalation of this issue beyond the forums for several critical reasons: Severity and Scope: This is not a general development discussion topic. We are facing a massive, reproducible performance issue on iOS 16 that renders devices unresponsive, requiring factory resets or DFU restores. This goes far beyond typical app bugs and points to a potential systemic issue in the OS's image handling. Insufficiency of Forum Support: While the forums are a valuable resource for community advice, they cannot provide the official, in-depth technical diagnosis from Apple engineers that this situation demands. Our users' devices are being bricked by an app update that passed App Review, and we require clarity on the root cause to prevent further damage and restore user trust. Code-Level Support Eligibility: As members of the Apple Developer Program, we believe our issue falls under the purview of Code-Level Support, as described on the Apple Developer website 9. Our problem involves "building or running software" and requires expertise in Apple's frameworks and hardware-level image rendering APIs. We request that our case be forwarded to that specialized team. To reiterate the core problem: Our update introduced 1024x1026 JPEG assets into the Asset Catalog. On iOS 16, this causes severe overheating, freezing, and device unresponsiveness. Replacing them with PNGs completely resolves the issue. This suggests a potentially serious regression in iOS 16's JPEG decoding or memory management pipeline. We prepared to provide a sample project that demonstrates the issue if required. Our case number is 102678393572. We urgently need to understand why this happens at the OS level to ensure our app is safe and to contribute to the stability of the iOS platform. Please escalate this case to the appropriate technical team for a detailed investigation. Sincerely,
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Oct ’25
Associated Domains and location of the AASA file when “service”=”Authsrv”
We are planning to use our internal IdP (PingFederate) for authentication of end users in their iOS apps using ASWebAuthenticationSession. Initial tests are successful, but the user is prompted for every login (and logouts) with a consent dialogue box: “AppName” wants to use “internal domain-name” to Sign In This allows the app and website to share information about you. Cancel Continue” Let’s say that our top-level domain is “company.no”, where our IdP is placed at “idp.company.com”. I have seen examples where the Associated domains entitlement points to the idp as a webserver for serving the JSON output AASA file. In this case that would be: authsrv: idp.company.com Anyone with experience implementing this structure with the IdP as webserver for serving the JSON output? Our problem is that trying to use the IdP as webserver for this purpose is that it is very complicated to modify the IdP’s webserver configuration. Also, this modification needs to be re-done every time we need to upgrade the IdP. My question is therefore also related to the options of which webserver to install the AASA file on. Has anyone installed the file on a generic webserver on the toplevel domain like “webserver.company.com” ?
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Apr ’25
MetricKit Metric Payload Split
In MetricKit, a metric payload comes in with a time range which usually means it contains multiple launches/sessions. How can we relate things that will change between launches or sessions such as pid and lowPowerModeEnabled from the metadata. Will there be multiple payloads for each unique value or is there some other way to use this?
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Feb ’26
iOS26 beta4 CallKit block number function not working
Hi I'm novice developer. I’m currently developing a phone number blocking app using a Call Directory Handler Extension. The blocking feature works perfectly on iOS 18.5, but it doesn’t seem to function properly on iOS 26 beta 4. The extension is invoked, and the numbers are passed correctly, but incoming calls are not being blocked as expected. Is there a known issue with CallKit or Call Directory Extensions on iOS 26 beta 4
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Aug ’25
apple-app-site-association file 404 problem
We put the apple-app-site-association file at https://ourdomain.com.tr/.well-known/apple-app-site-association. When we send a request to url, we get 200 response code every time and we can see the file. But sometimes when we try to access https://app-site-association.cdn-apple.com/a/v1/ourdomain.com.tr url with browser or CMD tool, we are facing with 404 response code. There isn't any ip adress filter in our systems and we tried using vpn for sending same request from different locations(america and europe) but nothing changed. In addition, can anyone provide the ip list of apple cdn servers to check the F5 Load balancer WAF logs? CMD output: C:\Users\Name>curl -Lv https://app-site-association.cdn-apple.com/a/v1/ourdomain.com.tr Host app-site-association.cdn-apple.com:443 was resolved. IPv6: (none) IPv4: 17.253.122.197, 17.253.15.210, 17.253.122.196, 17.253.107.201, 17.253.57.203, 17.253.15.198, 17.253.57.200 Trying 17.253.122.197:443... Connected to app-site-association.cdn-apple.com (17.253.122.197) port 443 schannel: disabled automatic use of client certificate ALPN: curl offers http/1.1 ALPN: server accepted http/1.1 using HTTP/1.x GET /a/v1/ourdomain.com HTTP/1.1 Host: app-site-association.cdn-apple.com User-Agent: curl/8.9.1 Accept: / Request completely sent off schannel: remote party requests renegotiation schannel: renegotiating SSL/TLS connection schannel: SSL/TLS connection renegotiated < HTTP/1.1 404 Not Found < Apple-Failure-Details: {"cause":"context deadline exceeded (Client.Timeout exceeded while awaiting headers)"} < Apple-Failure-Reason: SWCERR00301 Timeout < Apple-From: https://ourdomain.com.tr/.well-known/apple-app-site-association < Apple-Try-Direct: true < Cache-Control: max-age=3600,public < Content-Length: 10 < Content-Type: text/plain; charset=utf-8 < Date: Mon, 14 Apr 2025 12:52:04 GMT < Expires: Mon, 14 Apr 2025 12:52:14 GMT < Age: 1770 < Via: http/1.1 uklon5-vp-vst-004.ts.apple.com (acdn/268.14469), https/1.1 uklon5-vp-vfe-002.ts.apple.com (acdn/268.14469), http/1.1 frmrs1-edge-mx-008.ts.apple.com (acdn/268.14469), http/1.1 frmrs1-edge-fx-005.ts.apple.com (acdn/268.14469) < X-Cache: hit-fresh, hit-stale, hit-fresh, hit-fresh < CDNUUID: 9e72cf99-1503-4644-9ea3-173328a25c94-31496306226 < Connection: keep-alive < Not Found Connection #0 to host app-site-association.cdn-apple.com left intact
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Feb ’26
About AppShortcuts limit
I developed a shortcut feature for my app using the AppIntents framework, which can display a maximum of 10 shortcuts in the Shortcuts app. However, I've noticed that apps like Tesla and Porsche have a significantly larger number of shortcuts, far exceeding 10. After searching online, I found that they might be using Intent Extensions and the SiriKit framework. I customized an Intent through SiriKit, checked the option for "Intent is user-configurable in the Shortcuts app" and "Add to Siri." I can find this shortcut when I search for it, but it does not appear on the homepage or under the app category. Is there any way to resolve this?
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Aug ’25
Receive Custom URL Parameters
Hello! I’m trying to handle custom URLs (e.g., customurl://open?param=value) that open the app. However, while the app launches via the custom URL as expected, the parameters are not being passed to or are accessible from the iOS-specific implementation. Currently, if I open a custom URL via Safari, the app gets launched but the custom URL and parameters are not accessible. customurl://open?hello=test According to the iOS Docs ( https://developer.apple.com/documentation/xcode/defining-a-custom-url-scheme-for-your-app#Handle-incoming-URLs ) any URLs should be passed to: func application(_ application: UIApplication, open url: URL, options: [UIApplication.OpenURLOptionsKey : Any] = [:] ) -&gt; Bool I do not register the above application function to be called but instead this one is executed during app start with launchOptions always being nil: func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey : Any]? = nil) -&gt; Bool This is the case regardless of if the App is started fresh or was already running in the background. My pInfo entry for the custom URL: &lt;key&gt;CFBundleURLTypes&lt;/key&gt; &lt;array&gt; &lt;dict&gt; &lt;key&gt;CFBundleTypeRole&lt;/key&gt; &lt;string&gt;Viewer&lt;/string&gt; &lt;key&gt;CFBundleURLName&lt;/key&gt; &lt;string&gt;dev.customurl.project&lt;/string&gt; &lt;key&gt;CFBundleURLSchemes&lt;/key&gt; &lt;array&gt; &lt;string&gt;customurl&lt;/string&gt; &lt;/array&gt; &lt;/dict&gt; &lt;dict/&gt; &lt;/array&gt; TLDR: How can I access the parameters, passed with the URL? Any thoughts on what I am doing wrong?
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Apr ’25
Question about including all project classes in ofClasses parameter when using NSKeyedUnarchiver.unarchivedObject(ofClasses:from:)
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.
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Oct ’25
AlarmKit Not Playing Custom Sound or Named System Sounds - iOS 26 beta 4 (23A5297i)
I'm using the new AlarmKit framework to schedule and trigger alarms in my Swift app in iOS 26 beta 4 (23A5297i). I'm trying to customize the alarm sound using a sound file embedded in the app bundle or by referencing known system tones. Problem: No matter what I pass to .named("sound-2"), whether a file bundle url, .named("sound-2.caf"), tried .mp3, .caf & .aiff, or a known iOS system sound like .named("Radar") ("Chimes", etc.), the alarm always plays the default system alert tone. There's no error or warning, but the custom or specified sound is silently ignored. sound: .named("sound-2") Question: What is the correct method or approach to play custom sound / music when Alarm Triggers? What .named("...") expects file name, file Path URL or System sound name? Is there any specific audio file length accepted or specific format? Challenge: The alarm functionality feels incomplete without support for custom sounds. A single default alert tone is often not sufficient to wake up users effectively. Hope it will be fixed in the next iOS updates.
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Aug ’25
iOS Message Filter Extension - deferQueryRequestToNetwork(completion:) error
iOS Message Filter Extension - deferQueryRequestToNetwork(completion:) error I made a test app using the iOS App template and added a target using the Message Filter Extension template which invokes deferQueryRequestToNetwork(completion:) when receiving an SMS. The app and the extension have same "Associated Domains Capabilities" with "messagefilter" pointing to a server which receives query requests and returns proper responses. The extension has the "ILMessageFilterExtensionNetworkURL" key in Info.plist file which specifies the server URL. deferQueryRequestToNetwork(completion:) throws a com.apple.calls.messagefilter error which reads "Extension's containing app (appID ) unauthorized to defer requests to host "
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Sep ’25
WatchOS app not downloaded from appstore
This is a bit of a headscratcher. Xcode 16 fyi. I've written a standalone watchos app (with a stub ios app). Distributes and works perfectly over Testflight. I've submitted for app store and it passed the checks an I've released it for sale. Told my brother to use a promo code to download it and show me how it looks and report me any nuisances. He tells me there's no app neither on phone (expected) nor in watch. And he checked both the Watch ios app list and the watch. I've gone through various GPTs and they've all told me the basic troubleshooting. That his watch might not be supported (wrong, it's a watch 10 ultra with latest updates and my min supported versions are hilariously low). They've suggested that I might not have the right keys for making it standalone set, also no. They suggested that skip_install shouldn't be set to no; also wrong I think they're thinking xcode 13 and below. The stub ios app has a dependency on watchos app and also has an embed directive. I also checked the archive and saw the watchos app embedded indeed. Again, the app works perfectly fine when distributed over testflight. And AFAIK that's a release build which I know for a fact because I had a problem with not giving healthkit entitlements to release (that was another but minor headscratcher at the time, when it was working over direct xcode upload). Minor detail, I've written, test(flight)ed the app in UK and in English, my brother is in Turkey. Of course now I immediately pulled the app out of sale because I don't want people paying and getting nothing, that's gonna cause a lot of trouble. So I need any help I can get to How to debug this without exposing the app and myself: is it possible to limit the release? Obviously: what could be going wrong? How the hell did I even pass app review? Is this maybe isolated to my brother's watch? I'm more than happy to share project files and/or info.plist files(end products of them, because my plists are generated from project file).
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Apr ’25
How to learn most recent best practices?
Hello. Background: Most learning resources are for leaning Swift/Objective-C. I'm pretty sure I need something different. I'm already an experienced software engineer, just new to iOS/MacOS development. My problem is not learning the language, but rather how to learn modern best practices. I cannot find examples for what I'm looking for. So much seems to be sparse on implementation details, out of date, or both. I'm trying to write an app that has a few distinct parts. The UI portion will be mostly a menu bar app, which I am not having a problem discovering resources for how to implement. The app will also have a daemon and utilize network extensions. This is where I am having trouble. What's the current best practices on how to write and launch a daemon? Should the daemon be its own library/package which is them imported into the main app? If so, which Xcode template do I use for this? Are there any Hello World! examples of this? What is the best way for a UI app to communicate with a daemon? Are there any Hello World! repositories on how to implement network extensions? Should this be done in the main UI app, or in a separate library/package? TIA
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Apr ’25
WeatherKit fails on AppStore
Hello, After being in the AppStore for more than a year with the app working perfectly, yesterday I started seeing that WeatherKit requests failed with Failed to generate jwt token for: com.apple.weatherkit.authservice with error: Error Domain=WeatherDaemon.WDSJWTAuthenticatorServiceListener.Errors Code=2 "(null)" Encountered an error when fetching weather data subset; location=<+41.40217108,+2.20023642> +/- 0.00m (speed -1.00 mps / course -1.00) @ 13/12/25, 12:20:35 Central European Standard Time, error=WeatherDaemon.WDSJWTAuthenticatorServiceListener.Errors 2 Error Domain=WeatherDaemon.WDSJWTAuthenticatorServiceListener.Errors Code=2 "(null)" I checked on developer.apple.com and we still have everything turned on and No changes were made from an already deployed app; and we pay 200$ a month for WeatherKit, this is unacceptable since it's not the first time WeatherKit randomly decides to stop working. More fun facts: the widget works fine...
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5
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262
Activity
Jan ’26
Does Live Caller ID Lookup entirely replace Call SIP content, or are they ever combined?
If an iPhone receives an incoming call with some partial sip content (for example it contains a name but not an image, or vice versa) and if there is an app enabled for Live Caller ID Lookup, and the result of that lookup supplies data not in the sip (i.e. the lookup returns an image, but not a name, or vice versa). Then could the OS combine data from both sources, or is whatever is returned from the LCIDL what gets displayed in the call screen. I suppose that is the case but just want to enquire to make sure. Thank you
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5
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0
Views
723
Activity
2w
iOS fails to fetch AASA file for IDNs
Subject: iOS Fails to Fetch AASA File for Internationalized Domain Names (IDN) in Unicode or Punycode Format Dear Apple Developer Relations Team And Community Members, We are reporting a critical bug in the iOS Associated Domains feature that prevents Universal Links from working for apps using Internationalized Domain Names (IDN). Problem Description: The iOS operating system does not attempt to download the apple-app-site-association (AASA) file for domains containing non-ASCII characters (e.g., diacritics, Cyrillic). This failure occurs regardless of whether the domain is specified in the app's entitlements in its human-readable Unicode format (e.g., montréal.ca) or its encoded Punycode format (e.g., xn--montral-fya.ca, xn--e1afka0abm4b.xn--p1ai). Without fetching and validating this file, Universal Links are not activated, and the system fails to establish a connection between the website and our app. Steps to Reproduce: Create an app with the Associated Domains entitlement enabled. Add an IDN to the entitlement. We tested both formats: Format A (Unicode): applinks://montréal.ca Format B (Punycode): applinks://xn--montral-fya.ca Host a valid AASA file on our server at the correct, accessible well-known URLs for both domain representations: For montréal.ca: https://montréal.ca/.well-known/apple-app-site-association and https://xn--montral-fya.ca/.well-known/apple-app-site-association Install the app on a device running the latest iOS version. Monitor network traffic using a tool like Charles Proxy. Observed Result: No HTTP GET request is made to any of the AASA URLs for the domains montréal.ca (in either Unicode or Punycode format) upon app installation. The system does not initiate the domain validation process. In contrast, for a standard ASCII domain (e.g., applinks://example.com), the AASA fetch is triggered immediately and is observed in the network log. Expected Result: iOS should correctly resolve the Internationalized Domain Name (whether specified in Unicode or Punycode format in the entitlement) and perform an HTTP GET request to fetch the AASA file from the /.well-known path, identical to its behavior for ASCII domains. Evidence & Configuration: Our server is configured correctly: SSL certificates are valid, the AASA file is served with the correct application/json MIME type, and is directly accessible via a browser or curl. The AASA file's syntax has been validated and is correct. The issue is reproducible on the latest versions of iOS. Impact: This bug blocks a core platform feature for millions of users in regions that use non-Latin scripts (e.g., France, Russia, China, Arab states). It makes it impossible to use Universal Links with our primary domains, severely degrading the user experience and forcing us to seek suboptimal workarounds like registering separate ASCII domains. Request: We kindly request that you investigate and log this issue as a bug in iOS and forward it to the appropriate engineering team for a fix in an upcoming update. We are prepared to provide any additional information, demo projects, or server access to assist in diagnostics. Thank you for your attention to this serious matter.
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5
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494
Activity
Jan ’26
Universal Link Not Working – Apple Request Blocked by Firewall Due to Geographic Restriction
Hello, I’m encountering an issue with Universal Links in my iOS app. After some investigation, I found that the root cause seems to be that Apple’s request through there CDN server to access the .well-known/apple-app-site-association file is blocked by our firewall, which enforces geographic access restrictions as part of our security policy. Because of this restriction, Apple’s validation or link verification requests are being denied, and the Universal Links are not working as expected. I’d like to get some guidance from the community or Apple engineers on the following: 1. Does Apple provide an official list of IP ranges or domains that need to be allowed through the firewall for Universal Link validation? 2. Are there alternative methods to handle Universal Link verification in environments with geographic restrictions? 3. Would whitelisting specific Apple services or endpoints be a recommended or safe solution? Any input or recommendations would be greatly appreciated. Environment Details: • iOS app using Universal Links • Server protected by a firewall with regional restrictions • AASA file hosted correctly and accessible via browser Thanks in advance for your help and insights.
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5
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297
Activity
Nov ’25
How to add icon and thumbnail image for a Screensaver ?
I have made a screensaver for mac in swift, but couldn't find how to add an icon the logo image that shows up on saver file) and thumbnail (the cover image that shows up in the screensaver catalogue). Currently, it just shows a default blue spiral galaxy thumbnail and no icon image
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5
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535
Activity
Nov ’25
Critical Technical Issue: App Update Rendering iPhones Inoperative on iOS 16 Versions
We appreciate your suggestion to use the Apple Developer Forums. However, we must respectfully request further escalation of this issue beyond the forums for several critical reasons: Severity and Scope: This is not a general development discussion topic. We are facing a massive, reproducible performance issue on iOS 16 that renders devices unresponsive, requiring factory resets or DFU restores. This goes far beyond typical app bugs and points to a potential systemic issue in the OS's image handling. Insufficiency of Forum Support: While the forums are a valuable resource for community advice, they cannot provide the official, in-depth technical diagnosis from Apple engineers that this situation demands. Our users' devices are being bricked by an app update that passed App Review, and we require clarity on the root cause to prevent further damage and restore user trust. Code-Level Support Eligibility: As members of the Apple Developer Program, we believe our issue falls under the purview of Code-Level Support, as described on the Apple Developer website 9. Our problem involves "building or running software" and requires expertise in Apple's frameworks and hardware-level image rendering APIs. We request that our case be forwarded to that specialized team. To reiterate the core problem: Our update introduced 1024x1026 JPEG assets into the Asset Catalog. On iOS 16, this causes severe overheating, freezing, and device unresponsiveness. Replacing them with PNGs completely resolves the issue. This suggests a potentially serious regression in iOS 16's JPEG decoding or memory management pipeline. We prepared to provide a sample project that demonstrates the issue if required. Our case number is 102678393572. We urgently need to understand why this happens at the OS level to ensure our app is safe and to contribute to the stability of the iOS platform. Please escalate this case to the appropriate technical team for a detailed investigation. Sincerely,
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5
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149
Activity
Oct ’25
CallKit: Can an app auto-open after answering a VoIP call on lock screen?
Hi everyone, on iOS, when a VoIP call arrives and the user accepts it from the lock screen (after unlocking with Face ID/Touch ID), is there any way to automatically bring my app to the foreground and show the in-app call screen, instead of staying in the system CallKit UI?
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5
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362
Activity
Aug ’25
Associated Domains and location of the AASA file when “service”=”Authsrv”
We are planning to use our internal IdP (PingFederate) for authentication of end users in their iOS apps using ASWebAuthenticationSession. Initial tests are successful, but the user is prompted for every login (and logouts) with a consent dialogue box: “AppName” wants to use “internal domain-name” to Sign In This allows the app and website to share information about you. Cancel Continue” Let’s say that our top-level domain is “company.no”, where our IdP is placed at “idp.company.com”. I have seen examples where the Associated domains entitlement points to the idp as a webserver for serving the JSON output AASA file. In this case that would be: authsrv: idp.company.com Anyone with experience implementing this structure with the IdP as webserver for serving the JSON output? Our problem is that trying to use the IdP as webserver for this purpose is that it is very complicated to modify the IdP’s webserver configuration. Also, this modification needs to be re-done every time we need to upgrade the IdP. My question is therefore also related to the options of which webserver to install the AASA file on. Has anyone installed the file on a generic webserver on the toplevel domain like “webserver.company.com” ?
Replies
4
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0
Views
138
Activity
Apr ’25
MetricKit Metric Payload Split
In MetricKit, a metric payload comes in with a time range which usually means it contains multiple launches/sessions. How can we relate things that will change between launches or sessions such as pid and lowPowerModeEnabled from the metadata. Will there be multiple payloads for each unique value or is there some other way to use this?
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4
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0
Views
177
Activity
Feb ’26
iOS26 beta4 CallKit block number function not working
Hi I'm novice developer. I’m currently developing a phone number blocking app using a Call Directory Handler Extension. The blocking feature works perfectly on iOS 18.5, but it doesn’t seem to function properly on iOS 26 beta 4. The extension is invoked, and the numbers are passed correctly, but incoming calls are not being blocked as expected. Is there a known issue with CallKit or Call Directory Extensions on iOS 26 beta 4
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4
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0
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203
Activity
Aug ’25
iOS18Crach xzm_xzone_malloc_tiny_outlined
We have found a large number of memory-related crashes in iOS18, and multiple issues have finally pointed to this crash line xzm_xzone_malloc_tiny_outlined. Do not know how to solve it now
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4
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0
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1.7k
Activity
May ’25
apple-app-site-association file 404 problem
We put the apple-app-site-association file at https://ourdomain.com.tr/.well-known/apple-app-site-association. When we send a request to url, we get 200 response code every time and we can see the file. But sometimes when we try to access https://app-site-association.cdn-apple.com/a/v1/ourdomain.com.tr url with browser or CMD tool, we are facing with 404 response code. There isn't any ip adress filter in our systems and we tried using vpn for sending same request from different locations(america and europe) but nothing changed. In addition, can anyone provide the ip list of apple cdn servers to check the F5 Load balancer WAF logs? CMD output: C:\Users\Name>curl -Lv https://app-site-association.cdn-apple.com/a/v1/ourdomain.com.tr Host app-site-association.cdn-apple.com:443 was resolved. IPv6: (none) IPv4: 17.253.122.197, 17.253.15.210, 17.253.122.196, 17.253.107.201, 17.253.57.203, 17.253.15.198, 17.253.57.200 Trying 17.253.122.197:443... Connected to app-site-association.cdn-apple.com (17.253.122.197) port 443 schannel: disabled automatic use of client certificate ALPN: curl offers http/1.1 ALPN: server accepted http/1.1 using HTTP/1.x GET /a/v1/ourdomain.com HTTP/1.1 Host: app-site-association.cdn-apple.com User-Agent: curl/8.9.1 Accept: / Request completely sent off schannel: remote party requests renegotiation schannel: renegotiating SSL/TLS connection schannel: SSL/TLS connection renegotiated < HTTP/1.1 404 Not Found < Apple-Failure-Details: {"cause":"context deadline exceeded (Client.Timeout exceeded while awaiting headers)"} < Apple-Failure-Reason: SWCERR00301 Timeout < Apple-From: https://ourdomain.com.tr/.well-known/apple-app-site-association < Apple-Try-Direct: true < Cache-Control: max-age=3600,public < Content-Length: 10 < Content-Type: text/plain; charset=utf-8 < Date: Mon, 14 Apr 2025 12:52:04 GMT < Expires: Mon, 14 Apr 2025 12:52:14 GMT < Age: 1770 < Via: http/1.1 uklon5-vp-vst-004.ts.apple.com (acdn/268.14469), https/1.1 uklon5-vp-vfe-002.ts.apple.com (acdn/268.14469), http/1.1 frmrs1-edge-mx-008.ts.apple.com (acdn/268.14469), http/1.1 frmrs1-edge-fx-005.ts.apple.com (acdn/268.14469) < X-Cache: hit-fresh, hit-stale, hit-fresh, hit-fresh < CDNUUID: 9e72cf99-1503-4644-9ea3-173328a25c94-31496306226 < Connection: keep-alive < Not Found Connection #0 to host app-site-association.cdn-apple.com left intact
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4
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378
Activity
Feb ’26
CallKit-linked Caller not displayed on iOS 18 CarPlay.
Since I updated to iOS 18, CallKit-linked caller not display on screen of CarPlay. CarPlay display only "{App Name} Caller ID". When iOS version was 17.x, CarPlay displayed caller name of CallKit-linked contact. I think CarPlay should perform the same function as iOS 17. Please review it.
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4
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2
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505
Activity
Nov ’25
About AppShortcuts limit
I developed a shortcut feature for my app using the AppIntents framework, which can display a maximum of 10 shortcuts in the Shortcuts app. However, I've noticed that apps like Tesla and Porsche have a significantly larger number of shortcuts, far exceeding 10. After searching online, I found that they might be using Intent Extensions and the SiriKit framework. I customized an Intent through SiriKit, checked the option for "Intent is user-configurable in the Shortcuts app" and "Add to Siri." I can find this shortcut when I search for it, but it does not appear on the homepage or under the app category. Is there any way to resolve this?
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4
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0
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252
Activity
Aug ’25
Receive Custom URL Parameters
Hello! I’m trying to handle custom URLs (e.g., customurl://open?param=value) that open the app. However, while the app launches via the custom URL as expected, the parameters are not being passed to or are accessible from the iOS-specific implementation. Currently, if I open a custom URL via Safari, the app gets launched but the custom URL and parameters are not accessible. customurl://open?hello=test According to the iOS Docs ( https://developer.apple.com/documentation/xcode/defining-a-custom-url-scheme-for-your-app#Handle-incoming-URLs ) any URLs should be passed to: func application(_ application: UIApplication, open url: URL, options: [UIApplication.OpenURLOptionsKey : Any] = [:] ) -&gt; Bool I do not register the above application function to be called but instead this one is executed during app start with launchOptions always being nil: func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey : Any]? = nil) -&gt; Bool This is the case regardless of if the App is started fresh or was already running in the background. My pInfo entry for the custom URL: &lt;key&gt;CFBundleURLTypes&lt;/key&gt; &lt;array&gt; &lt;dict&gt; &lt;key&gt;CFBundleTypeRole&lt;/key&gt; &lt;string&gt;Viewer&lt;/string&gt; &lt;key&gt;CFBundleURLName&lt;/key&gt; &lt;string&gt;dev.customurl.project&lt;/string&gt; &lt;key&gt;CFBundleURLSchemes&lt;/key&gt; &lt;array&gt; &lt;string&gt;customurl&lt;/string&gt; &lt;/array&gt; &lt;/dict&gt; &lt;dict/&gt; &lt;/array&gt; TLDR: How can I access the parameters, passed with the URL? Any thoughts on what I am doing wrong?
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4
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215
Activity
Apr ’25
Question about including all project classes in ofClasses parameter when using NSKeyedUnarchiver.unarchivedObject(ofClasses:from:)
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.
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4
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251
Activity
Oct ’25
AlarmKit Not Playing Custom Sound or Named System Sounds - iOS 26 beta 4 (23A5297i)
I'm using the new AlarmKit framework to schedule and trigger alarms in my Swift app in iOS 26 beta 4 (23A5297i). I'm trying to customize the alarm sound using a sound file embedded in the app bundle or by referencing known system tones. Problem: No matter what I pass to .named("sound-2"), whether a file bundle url, .named("sound-2.caf"), tried .mp3, .caf & .aiff, or a known iOS system sound like .named("Radar") ("Chimes", etc.), the alarm always plays the default system alert tone. There's no error or warning, but the custom or specified sound is silently ignored. sound: .named("sound-2") Question: What is the correct method or approach to play custom sound / music when Alarm Triggers? What .named("...") expects file name, file Path URL or System sound name? Is there any specific audio file length accepted or specific format? Challenge: The alarm functionality feels incomplete without support for custom sounds. A single default alert tone is often not sufficient to wake up users effectively. Hope it will be fixed in the next iOS updates.
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4
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2
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187
Activity
Aug ’25
iOS Message Filter Extension - deferQueryRequestToNetwork(completion:) error
iOS Message Filter Extension - deferQueryRequestToNetwork(completion:) error I made a test app using the iOS App template and added a target using the Message Filter Extension template which invokes deferQueryRequestToNetwork(completion:) when receiving an SMS. The app and the extension have same "Associated Domains Capabilities" with "messagefilter" pointing to a server which receives query requests and returns proper responses. The extension has the "ILMessageFilterExtensionNetworkURL" key in Info.plist file which specifies the server URL. deferQueryRequestToNetwork(completion:) throws a com.apple.calls.messagefilter error which reads "Extension's containing app (appID ) unauthorized to defer requests to host "
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4
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0
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701
Activity
Sep ’25
WatchOS app not downloaded from appstore
This is a bit of a headscratcher. Xcode 16 fyi. I've written a standalone watchos app (with a stub ios app). Distributes and works perfectly over Testflight. I've submitted for app store and it passed the checks an I've released it for sale. Told my brother to use a promo code to download it and show me how it looks and report me any nuisances. He tells me there's no app neither on phone (expected) nor in watch. And he checked both the Watch ios app list and the watch. I've gone through various GPTs and they've all told me the basic troubleshooting. That his watch might not be supported (wrong, it's a watch 10 ultra with latest updates and my min supported versions are hilariously low). They've suggested that I might not have the right keys for making it standalone set, also no. They suggested that skip_install shouldn't be set to no; also wrong I think they're thinking xcode 13 and below. The stub ios app has a dependency on watchos app and also has an embed directive. I also checked the archive and saw the watchos app embedded indeed. Again, the app works perfectly fine when distributed over testflight. And AFAIK that's a release build which I know for a fact because I had a problem with not giving healthkit entitlements to release (that was another but minor headscratcher at the time, when it was working over direct xcode upload). Minor detail, I've written, test(flight)ed the app in UK and in English, my brother is in Turkey. Of course now I immediately pulled the app out of sale because I don't want people paying and getting nothing, that's gonna cause a lot of trouble. So I need any help I can get to How to debug this without exposing the app and myself: is it possible to limit the release? Obviously: what could be going wrong? How the hell did I even pass app review? Is this maybe isolated to my brother's watch? I'm more than happy to share project files and/or info.plist files(end products of them, because my plists are generated from project file).
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4
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224
Activity
Apr ’25
How to learn most recent best practices?
Hello. Background: Most learning resources are for leaning Swift/Objective-C. I'm pretty sure I need something different. I'm already an experienced software engineer, just new to iOS/MacOS development. My problem is not learning the language, but rather how to learn modern best practices. I cannot find examples for what I'm looking for. So much seems to be sparse on implementation details, out of date, or both. I'm trying to write an app that has a few distinct parts. The UI portion will be mostly a menu bar app, which I am not having a problem discovering resources for how to implement. The app will also have a daemon and utilize network extensions. This is where I am having trouble. What's the current best practices on how to write and launch a daemon? Should the daemon be its own library/package which is them imported into the main app? If so, which Xcode template do I use for this? Are there any Hello World! examples of this? What is the best way for a UI app to communicate with a daemon? Are there any Hello World! repositories on how to implement network extensions? Should this be done in the main UI app, or in a separate library/package? TIA
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4
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171
Activity
Apr ’25