Heyy, I'm building a music tracking app that logs a user's Apple Music plays to build a personal weekly chart. The core mechanic depends on accurately counting how many times a user plays each track. My current implementation uses MPMusicPlayerController.systemMusicPlayer with beginGeneratingPlaybackNotifications() and observes MPMusicPlayerControllerNowPlayingItemDidChange. This works well when the app is in the foreground or recently backgrounded, but notifications stop firing once iOS suspends the app. To get around this I've implemented: applicationDidBecomeActive - restarts the monitor and logs the currently playing track on every foreground Background fetch (performFetchWithCompletionHandler) - periodically wakes the app to log what's playing. This gives some coverage but misses plays that happen between background fetch intervals or when the user hasn't opened the app in a while. The result is an inaccurate play count which undermines the core feature. My questions: Is there a supported entitlement or capability that would allow an app to receive MPMusicPlayerController playback notifications while suspended? Is MusicKit or MediaPlayer the recommended framework for this use case, or is there a better API I'm not aware of? Are there any supported background modes that would keep playback notification delivery alive without requiring the app to be a full audio player? I've looked at MusicRecentlyPlayedRequest but it only returns the last 25 items with no play counts, so it can't tell me a track was played 10 times vs once. Any guidance on the right approach here would be really appreciated.

Hi Team, We are implementing HealthKit data sync using HKObserverQuery along with enableBackgroundDelivery and BGTaskScheduler for fallback processing. However, we are observing inconsistent behavior and would like clarification on expected system behavior: For HKObserverQuery: When using enableBackgroundDelivery with frequency .immediate, we sometimes receive updates promptly, but other times we do not receive any trigger at all. Similarly, when using .hourly, our expectation was that updates would be delivered approximately once per hour, but in practice, triggers are delayed, batched, or skipped. For BGTaskScheduler: We are scheduling BGAppRefreshTask with earliestBeginDate set (e.g., 1 hour), but tasks are sometimes delayed by several hours or not triggered predictably. In some cases, tasks are not executed even after extended periods. We would like to understand: Are HKObserverQuery delivery frequencies (.immediate, .hourly, .daily) strictly best-effort hints rather than guaranteed intervals? Under what conditions can observer updates be skipped or significantly delayed? Is there any recommended approach to ensure more reliable periodic syncing of HealthKit data? For BGTaskScheduler, what factors most strongly influence scheduling delays or missed executions? Our goal is to design a reliable sync mechanism, but the lack of deterministic behavior is making it difficult to define expected system behavior. Any clarification or recommended best practices would be greatly appreciated. Thanks in advance!

Hi, I'm having the same issue described in https://developer.apple.com/forums/thread/690974?page=2. When connected to Xcode or when the app is in the foreground, HKObserverQuery fires correctly and my app processes step updates. But once disconnected from Xcode, background delivery stops completely and the observer callback is never called. My setup: com.apple.developer.healthkit.background-delivery entitlement is present and in the provisioning profile enableBackgroundDelivery(for: .stepCount, frequency: .immediate) returns success = true HKObserverQuery is registered on every launch including background launches I also have CMPedometer.startEventUpdates running as a supplemental trigger Background Modes includes "Background fetch" and "Background processing" Device: iPhone, iOS 17.4+ App type: App uses Screen Time / Family Controls (ManagedSettings) to block apps until a step goal is met Has anyone found a reliable fix? Any feedback from Apple engineers would be appreciated.

Hi, I've now identified a few areas when BGContinuedProcessingTask gets expired by the system no progress for ~30 seconds high CPU usage high temperature Some of these I can preempt and expire preemptively and handle the notification, others I cannot and just need to let the failure bubble up. When the failure does bubble up, I'd like to update the title and subtitle. I'm able to update the title, but the subtitle is fixed at "Task Failed" Is there any workaround? Or shall I file a bug here?

I have a question regarding cold start and pre-warming behavior on iOS. I’m developing a SwiftUI app that continuously receives data from a BLE device in the background. We’ve observed that after the BLE stream stops, the OS often terminates our app. Later, when the sensor comes back into range, iOS appears to relaunch (or reinitialize) the app. In our app, we use a WindowGroup like this: WindowGroup { AppView(store: store) } We’ve placed our BLE reconnection logic inside a .task modifier in AppView. What’s confusing is this: Most of the time, when the app is relaunched, AppView is created and the .task runs as expected. However, in about 1 out of 10 cases, AppView is not created at all, so the .task does not execute. I’m trying to understand: Under what conditions does iOS relaunch an app without fully initializing the SwiftUI view hierarchy? Is this related to pre-warming or background relaunch mechanisms (e.g., CoreBluetooth state restoration)? What determines whether the WindowGroup and root view are actually instantiated? Any insight into the system’s relaunch behavior or lifecycle in this scenario would be greatly appreciated.

Hi everyone, I’m currently implementing Live Activities in my music app to display real-time lyrics on the Lock Screen. The app works fully offline, so I’m not using push updates or push tokens. Instead, I’m updating the Live Activity locally as each new line of lyrics is played (essentially near real-time updates synced with the song). However, I’m running into an issue where the Live Activity UI is not updating reliably or frequently enough. Even though I’m calling the update method for each lyric line, the changes are either delayed or not reflected at all. Here’s some additional context: • The app runs fine in the background (verified via battery usage and playback behavior) • Live Activity is successfully created and initially displayed • Updates are triggered locally (no push notifications involved) • Updates are happening quite frequently (per lyric line) • No crashes or errors are observed My questions: 1. Is there a system-imposed throttling limit on how frequently Live Activities can be updated locally? 2. Are there recommended update intervals for smooth UI updates (e.g., for use cases like lyrics or timers)? 3. Does Live Activity deprioritize updates for offline apps or background execution? 4. Are there any additional configurations or capabilities required to ensure consistent updates? 5. Is using something like AsyncStream or other concurrency patterns helpful in this case? 6. Are there any undocumented limitations or best practices for high-frequency updates? 7. Is there any private or internal API used by Apple apps (like Music) that allows smoother real-time updates? My goal is to achieve smooth, near real-time lyric updates similar to Apple Music’s Now Playing experience. Any guidance, best practices, or clarification would be greatly appreciated. Thanks in advance!

I'm developing a lighting control app for iOS that receives Art-Net (UDP port 6454) and sACN (UDP port 5568) packets from a lighting console and relays commands to BLE wristbands with LEDs. This is used in live event production — the participant locks their phone while in a show and expects lighting control to continue uninterrupted. The problem UDP receive stops reliably ~30 seconds after the screen locks. I understand this is by design - iOS suspends apps in the background. However, I'm trying to understand if any supported path exists for this use case. What I've already tried UIRequiresPersistentWiFi = true - helps with Wi-Fi association but doesn't prevent app suspension Silent AVAudioEngine loop with UIBackgroundModes: audio - keeps the app alive, works in testing, but risks App Store rejection and feels like an abuse of the audio background mode NWListener (Network framework) on the UDP port - same suspension behaviour Socket rebind on applicationWillEnterForeground - recovers after resume but doesn't prevent dropout What I'm asking Is there any supported background mode or entitlement for sustained UDP receive in a professional/enterprise context? (Similar to how VoIP apps get the voip background mode for sustained network activity.) Is the silent audio workaround considered acceptable for App Store distribution in a professional tools context, or will it be rejected? Is NEAppProxyProvider or another Network Extension a viable path, and if so does it require a special entitlement? Test project I have a minimal Xcode project (~130 lines) demonstrating the issue — NWListener on port 6454, packet counter, staleness timer, and silent audio toggle. I can share the test code. STEPS TO REPRODUCE In Xcode (one-time setup): Select the UDPBackgroundTest target → Signing & Capabilities → set your Team Plug in your iPhone → select it as the run destination Build & run — confirm packets appear on screen when you run 'send_test_udp.py' Lock the phone and observe the dropout Test: Open the app and run 'python3 send_test_udp.py 192.168.0.XXX' The app counts up the packages, they match the python output. 1 packet per second. lock screen & and wait 10 seconds unlock phone an see the numbers are 10 packets off

I am using Significant Location Change (SLC) monitoring to relaunch my app after it has been terminated. I have implemented SLC in two separate apps installed on the same device, and I would like to understand how the system delivers SLC events in this scenario. Specifically: Will both apps receive the SLC event at the same time, or can there be differences in the timing of delivery? If there are differences, what factors influence when each app receives the event? What criteria or system conditions determine how and when SLC events are delivered to different apps on the same device? Any clarification on the event delivery behavior would be greatly appreciated.

We are developing a watchOS application that records long audio sessions and uploads them to our backend in chunks (~5 MB each) using pre-signed URLs and URLSession background upload. Current behavior: While audio recording is active, uploads continue successfully even when the app is in the background. Once the recording stops, if multiple chunks (e.g., 10+) are still pending, the remaining uploads do not proceed in the background and appear to be suspended. We attempted to use WKExtendedRuntimeSession (mindfulness type) to allow sufficient time to enqueue background upload tasks, but the session is invalidated when the app goes to the background (e.g., wrist down or app inactive), which prevents reliable scheduling of uploads. Additionally, we added the entitlement: com.apple.developer.extended-runtime-session (mindfulness) in the Watch app entitlements file, but Xcode automatic signing fails with: “Provisioning profile does not include the com.apple.developer.extended-runtime-session entitlement.” It appears that the provisioning profile is not being updated to include this entitlement. Our questions: Is WKExtendedRuntimeSession (mindfulness) expected to support scheduling background URLSession uploads after the app goes to background? How should we reliably complete pending background uploads on watchOS after a long recording session ends? Is there any additional entitlement or recommended approach for this use case? Why is the extended runtime entitlement not being applied to the provisioning profile despite being added in the entitlements file? We are aiming to follow Apple-recommended practices for long-running tasks and background uploads on watchOS. Any guidance would be greatly appreciated.

I am developing an app used by public safety agencies. Part of the app is used to determine live agency staffing using geofences. For example, a geofence exists around a station, and when a user enters or exits that geofence, the app updates the staffing count at that station in real time. The issue I am having is reliably detecting when a user enters or exits the geofence while the app is killed (meaning the user force quit the app from the app launcher). I understand that iOS can relaunch an app in the background if the system terminated the process using Region Monitoring, but I haven't gotten a clear answer about whether or how this is possible if the user kills (force quits) the app. Thank you in advance for your assistance.

The expirationHandler on BGProcessingTask is a () -> Void closure. It provides no information about why it was called. In my testing, all of the following trigger the same handler: Time expiration Resource pressure (CPU, memory, battery) Not reporting progress User tapping "Stop" on the Live Activity There is no way for the app to tell these apart. Questions: Q1. Is there an official, complete list of all conditions that trigger expirationHandler? The documentation only mentions "time expires." Q2. What is the specific time limit before timeout? If it varies by device state, what are the conditions? Q3. A way to distinguish the reason is needed. "User stop" and "system expiration" require completely different handling. Currently this is impossible. Environment: iOS 26, physical device

We are using BGContinuedProcessingTask on iOS 26 for long-running background video compression and upload. This work usually takes about 30 minutes to 1 hour. In testing on physical devices, expirationHandler is invoked irregularly. In some cases, it seems like it is caused by total task duration, and in other cases, it seems related to system resource conditions such as CPU, memory, or battery. However, even after many experiments, we have not been able to find a clear or consistent pattern. The important problem for us is that we cannot tell why expirationHandler was called. From the app’s perspective, we need to handle the following cases differently: the user taps Stop in the Live Activity the system expires the task due to time expiration the task is terminated due to system resource pressure (CPU, memory, battery, etc.) other system-driven termination cases However, at the moment, it is difficult or practically impossible to distinguish these cases reliably. My questions are: In the context of BGContinuedProcessingTask, is it correct to think that expirationHandler may be triggered by reasons such as time expiration, system resource pressure, and user stop? If so, is there any official or supported way for the app to distinguish between these reasons? For long-running work such as video compression and upload, is it expected behavior that expirationHandler is invoked irregularly? If BGContinuedProcessingTask is not a stable approach for 30-minute to 1-hour background work, is there any other recommended or more reliable way to perform this kind of long-running background processing on iOS without unexpected interruption? Environment: iOS 26, physical device

We are using BGContinuedProcessingTask on iOS 26 for long-running background video compression and upload. This work usually takes about 30 minutes to 1 hour. In testing on physical devices, expirationHandler is invoked irregularly. In some cases, it seems like it is caused by total task duration, and in other cases, it seems related to system resource conditions such as CPU, memory, or battery. However, even after many experiments, we have not been able to find a clear or consistent pattern. The important problem for us is that we cannot tell why expirationHandler was called. From the app’s perspective, we need to handle the following cases differently: • the user taps Stop in the Live Activity • the system expires the task due to time expiration • the task is terminated due to system resource pressure (CPU, memory, battery, etc.) • other system-driven termination cases However, at the moment, it is difficult or practically impossible to distinguish these cases reliably. My questions are: 1. In the context of BGContinuedProcessingTask, is it correct to think that expirationHandler may be triggered by reasons such as time expiration, system resource pressure, and user stop? 2. If so, is there any official or supported way for the app to distinguish between these reasons? 3. For long-running work such as video compression and upload, is it expected behavior that expirationHandler is invoked irregularly? 4. If BGContinuedProcessingTask is not a stable approach for 30-minute to 1-hour background work, is there any other recommended or more reliable way to perform this kind of long-running background processing on iOS without unexpected interruption? Environment: iOS 26, physical device

The expirationHandler on BGProcessingTask is a () -> Void closure. It provides no information about why it was called. In my testing, all of the following trigger the same handler: Time expiration Resource pressure (CPU, memory, battery) Not reporting progress User tapping "Stop" on the Live Activity There is no way for the app to tell these apart. Questions: Q1. Is there an official, complete list of all conditions that trigger expirationHandler? The documentation only mentions "time expires." Q2. What is the specific time limit before timeout? If it varies by device state, what are the conditions? Q3. A way to distinguish the reason is needed. "User stop" and "system expiration" require completely different handling. Currently this is impossible. Environment: iOS 26, physical device

Hi, I am trying to implement a PHBackgroundResourceUploadExtension to upload backup media files to an external cloud service based on these docs: https://developer.apple.com/documentation/PhotoKit/uploading-asset-resources-in-the-background#Acknowledge-completed-jobs Creating jobs and actual uploading is working as expected, but the problem I have is in the acknowledgeCompletedJobs() function. When trying to access a job's resource, the resource is nil and thus has empty assetLocalIdentifier and originalFilename. Did anybody successfully implement this extension or knows, why this would happen? Because the resource of an acknowledgable job is empty, I can not match it back to my processed assets.

Hi, I am trying to implement a PHBackgroundResourceUploadExtension to upload backup media files to an external cloud service based on these docs: https://developer.apple.com/documentation/PhotoKit/uploading-asset-resources-in-the-background#Acknowledge-completed-jobs Creating jobs and actual uploading is working as expected, but the problem I have is in the acknowledgeCompletedJobs() function. When in this function, I am trying to access a job's resource. The resource is nil and thus has empty assetLocalIdentifier and originalFilename. Did anybody successfully implement this extension or knows, why this would happen? Because the resource of an acknowledgable job is empty, I can not match it back to my processed assets.

We are developing a video processing app that applies CIFilter chains to video frames. To not force the user to keep the app foregrounded, we were happy to see the introduction of BGContinuedProcessingTask to continue processing when backgrounded. With iOS 26, I was excited to see the com.apple.developer.background-tasks.continued-processing.gpu entitlement, which should allow GPU access in the background. Even the article in the documentation provides "exporting video in a film-editing app" or "applying visual filters (HDR, etc) or compressing images for social media posts" as use cases. However, when I check BGTaskScheduler.shared.supportedResources.contains(.gpu) at runtime, it returns false on every iPhone I've tested (including iPhone 15 Pro and iPhone 16 Pro). From forum responses I've seen, it sounds like background GPU access is currently limited to iPad only. If that's the case, I have a few questions: Is this an intentional, permanent limitation — or is iPhone support planned for a future iOS release? What is the recommended approach for GPU-dependent background work on iPhone? My custom CIKernels are written in Metal (as Apple recommends since CIKL is deprecated), but Metal CIKernels cannot fall back to CPU rendering. This creates a situation where Apple's own deprecation guidance (migrate to Metal) conflicts with background processing realities (no GPU on iPhone). Should developers maintain deprecated CIKL kernel versions alongside Metal kernels purely as a CPU fallback for background execution? That feels like it defeats the purpose of the migration. It seems like a gap in the platform: the API exists, the entitlement exists, but the hardware support isn't there for the most common device category. Any clarity on Apple's direction here would be very helpful.

Hello, We are facing an issue with performing a DTLS handshake when our iOS application is in the background. Our app (Vocera Collaboration Suite – VCS) uses secure DTLS-encrypted communication for incoming VoIP calls. Problem Summary: When the app is in the background and a VoIP PushKit notification arrives, we attempt to establish a DTLS handshake over our existing socket. However, the handshake consistently fails unless the app is already in the foreground. Once the app is foregrounded, the same DTLS handshake logic succeeds immediately. Key Questions: Is performing a DTLS handshake while the app is in the background technically supported by iOS? Or is this an OS-level limitation by design? If not supported, what is the Apple-recommended alternative to establish secure DTLS communication for VoIP flows without bringing the app to the foreground? Any guidance or clarification from Apple engineers or anyone who has solved a similar problem would be greatly appreciated. Thank you.

Hello, I am using CLLocationManager to monitor multiple CLBeaconRegion instances (up to 20). When the app is terminated by the system (not force-quit) and a region enter event occurs, the app is relaunched in the background. I have two questions: What is the expected execution time window after relaunch before the app is suspended again? Is it supported to start short CoreBluetooth operations (e.g., scanning or connecting briefly) within this window? I understand that force-quitting the app disables background relaunch, so this question applies only to system-terminated apps.

Hi Everyone 🙌 Who knows, additional content that downloads in install time are summarized to total app size in App Store page ? If yes, additional size going to WiFi/Cell download recommendations ? And what the limit ? Will be appreciate of all information, maybe someone using Background Asset extension :pray: