A Summary of the WWDC25 Group Lab

Environment Device: iPhone 16e iOS Version: 18.4.1 - 18.7.1 Framework: AVFoundation (AVAudioEngine) Problem Summary On iPhone 16e (iOS 18.4.1-18.7.1), the installTap callback stops being invoked after resuming from a phone call interruption. This issue is specific to phone call interruptions and does not occur on iPhone 14, iPhone SE 3, or earlier devices. Expected Behavior After a phone call interruption ends and audioEngine.start() is called, the previously installed tap should continue receiving audio buffers. Actual Behavior After resuming from phone call interruption: Tap callback is no longer invoked No audio data is captured No errors are thrown Engine appears to be running normally Note: Normal pause/resume (without phone call interruption) works correctly. Steps to Reproduce Start audio recording on iPhone 16e Receive or make a phone call (triggers AVAudioSession interruption) End the phone call Resume recording with audioEngine.start() Result: Tap callback is not invoked Tested devices: iPh

The S4A IDE Mac app store app used to use a group container to communicate between the main app and the XPC service that did the build, so it could share files for the build. It's time to hand over the app to a friend but I was blocked from transfer because the App Store says I was using a shared group container. I rewrote the main app and XPC service to pass a security-scoped URL via bookmark from the main app to the XPC and removed all entitlements for the group container. Cleaning out all containers and restarting the app, it still works but I can see no group container is created in ~/Library/Group Containers (it used to be with the old app). However, when I uploaded this app, after it passed app review I was still unable to transfer it, with the same error message. I then looked at the app id on developer.apple.com and realised the app id still had group containers even though I'd removed the entitlement from all entitlement files being used in the Xc

Title: Mistaken 4.3(a) “Spam/Copycat” Flag → 3.2(f) Termination — Seeking Guidance on Reinstatement Hi everyone, I’m an independent developer and I believe my account was escalated to termination because of a misunderstanding around Guideline 4.3(a) – Design – Spam and 4.1 – Design – Copycats. I want to explain the full timeline so I can get advice on how to present this correctly in the “Re-instate a terminated membership” request. 1. What I submitted I submitted an app called “Anime Jigsaw: Waifu Puzzles.” The idea was simple: it’s a jigsaw puzzle app, but I wanted to make it more relaxing by combining anime/waifu themed puzzle images with built-in lo‑fi music. So the concept I was aiming for was: puzzle + themed art + calming music, not just another generic jigsaw clone. 2. First rejection Apple rejected it under 4.3(a) – Design – Spam and also mentioned 4.1 – Copycats. The exact wording in App Store Connect said my app’s binary, metadata and/or concept was similar to apps that were previously submitted by

Hi everyone 👋 I’m running into a persistent SSL issue on iOS where the app fails to establish a secure HTTPS connection to our backend APIs. The same endpoints work fine on Android and web, but on iOS the requests fail with: Error Domain=NSURLErrorDomain Code=-1200 An SSL error has occurred and a secure connection to the server cannot be made. UserInfo={ NSLocalizedDescription = An SSL error has occurred and a secure connection to the server cannot be made.; _kCFStreamErrorDomainKey = 3; _kCFStreamErrorCodeKey = -9802; } 🔍 What I’ve Checked: The servers use valid, trusted SSL certificates from a public CA TLS 1.2 and 1.3 are enabled The intermediate certificates appear correctly configured (verified using SSL Labs) The issue happens on our customer's end. (Got it via Sentry) Note: We recently removed NSAppTransportSecurity(NSAllowsArbitraryLoads) on our app, since all the endpoints use valid HTTPS certificates and standard configurations. ❓ Questions: Are there additional SSL validation checks perf

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

Hi everyone, I'm developing an iOS app using Foundation Models and I've hit a critical limitation that I believe affects many developers and millions of users. The Issue Foundation Models requires the device system language to be one of the supported languages. If a user has their device set to an unsupported language (Catalan, Dutch, Swedish, Polish, Danish, Norwegian, Finnish, Czech, Hungarian, Greek, Romanian, and many others), SystemLanguageModel.isSupported returns false and the framework is completely unavailable. Why This Is Problematic Scenario: A Catalan user has their iPhone in Catalan (native language). They want to use an AI chat app in Spanish or English (languages they speak fluently). Current situation: ❌ Foundation Models: Completely unavailable ✅ OpenAI GPT-4: Works perfectly ✅ Anthropic Claude: Works perfectly ✅ Any cloud-based AI: Works perfectly The user must choose between: Keep device in Catalan → Cannot use Foundation Models at all Change entire device to Spanish → Can use Foundation Mo

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

Certainly! Here's a concise version of your forum post: Title: Issues Handling Multiple Incoming Calls in CallKit Body: Hello, I'm using CallKit and I am encountering challenges with handling multiple incoming calls. Current Configuration: configuration.maximumCallsPerCallGroup = 5 configuration.maximumCallGroups = 3 This setup aims to allow up to 5 calls per group. Observed Behavior: Despite the configuration, the system UI seems to limit the number of calls per group, often defaulting to End & Accept instead of Hold & Accept when a third call comes in. Questions: Is there a documented system-imposed limit on the number of calls per group or total calls, even if maximumCallGroups and maximumCallsPerCallGroup are set higher? How does the system UI behave when these limits are exceeded? Are there known UI constraints or fallback behaviors? Are there best practices for handling scenarios where the system UI cannot display all calls, such as gracefully managing incoming calls o