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Learn about the technical aspects of notification delivery on device, including notification types, priorities, and notification center management.

Notifications Documentation

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Push Live Activity not showing up
This is in an iOS Simulator running iOS 18.2 I send a start live activity push notification from the Push Notifications Console on icloud.developer.apple.com. When checking the console.log output it seems to receive the message, yet the activity does not appear in the dynamic island. (the app is backgrounded when I test this) Can anyone tell me why it's not showing? Starting the same activity from within the app using Swift code works fine. Here is the console.app output: default 11:01:59.060954+0100 apsd <APSConnectionServer: 0x104207b80; development/com.apple.aps.sessioncore.PushNotifications.dev/liveactivitiesd 0>: Sending push to client. UUID: (null) default 11:01:59.061012+0100 apsd Dispatching high priority message on server: <APSConnectionServer: 0x104207b80; development/com.apple.aps.sessioncore.PushNotifications.dev/liveactivitiesd 0> default 11:01:59.061770+0100 apsd Looking up connection on peer: 4304b50 found <APSConnectionServer: 0x104207b80; development/com.apple.aps.sessioncore.PushNotifications.dev/liveactivitiesd 0> default 11:01:59.062283+0100 liveactivitiesd APSXPCDeliverMessageEvent: Created APSIncomingMessage. UUID: (null) default 11:01:59.062642+0100 liveactivitiesd <APSConnection: 0x600003d18000> Delivering message from apsd: <APSIncomingMessage: 0x600000c2e9a0> 2897852514 com.****.****.push-type.liveactivity default 11:01:59.062763+0100 liveactivitiesd <APSConnection: 0x600003d18000> Delivering message from apsd. UUID: (null) default 11:01:59.063374+0100 liveactivitiesd <APSConnection: 0x600003d18000> making delegate (<SessionPushNotifications.APSPushConnection: 0x600000227460>) calls to deliver message 2897852514 { aps = { alert = { "loc-key" = "recording_started_message"; "title-loc-key" = "recording_started_title"; }; attributes = { isRecording = 1; }; "attributes-type" = SWAutomaticTripRecorderActivityAttributes; "content-state" = { distance = 0; }; event = start; timestamp = 1742374701; }; } for topic com.****.****test.push-type.liveactivity default 11:01:59.063440+0100 liveactivitiesd <APSConnection: 0x600003d18000> calling <SessionPushNotifications.APSPushConnection: 0x600000227460> connection:didReceiveIncomingMessage: default 11:01:59.063740+0100 liveactivitiesd Acquiring keep-alive with reason: Received message default 11:01:59.063785+0100 liveactivitiesd Keep-alive reasons: ["Received message": 1] default 11:01:59.063803+0100 liveactivitiesd <APSConnection: 0x600003d18000> returned from <SessionPushNotifications.APSPushConnection: 0x600000227460> connection:didReceiveIncomingMessage: default 11:01:59.063883+0100 liveactivitiesd <APSConnection: 0x600003d18000> responding with an ack for message with guid E19D7D04-12A0-4F1B-B33C-F6BF57EE2EFF default 11:01:59.063921+0100 liveactivitiesd <APSConnection: 0x600003d18000> responding with an ack. UUID: (null) default 11:01:59.063996+0100 apsd Looking up connection on peer: 4304b50 found <APSConnectionServer: 0x104207b80; development/com.apple.aps.sessioncore.PushNotifications.dev/liveactivitiesd 0> default 11:01:59.064019+0100 apsd <APSUserCourier 0x100f052a0 development 0> informed that <APSConnectionServer: 0x104207b80; development/com.apple.aps.sessioncore.PushNotifications.dev/liveactivitiesd 0> acknowledges incoming message with guid E19D7D04-12A0-4F1B-B33C-F6BF57EE2EFF tracingUUID (null) default 11:01:59.064063+0100 liveactivitiesd Received message: topic: Topic(unsuffixed: "com.****.****test"); channelID: nil; token: Optional(128 bytes); eventType: start(SessionPushNotifications.IncomingMessage.EventType.StartParameters(attributesType: "SWAutomaticTripRecorderActivityAttributes", attributesData: 20 bytes, inputs: [])) for environment: development default 11:01:59.064198+0100 liveactivitiesd Received push event for com.****.****test::pushToStart default 11:01:59.064232+0100 liveactivitiesd Adding push-to-start budget for com.****.****test::pushToStart default 11:01:59.064273+0100 liveactivitiesd Acquiring keep-alive with reason: Database default 11:01:59.064296+0100 liveactivitiesd Keep-alive reasons: ["Database": 1, "Received message": 1] default 11:01:59.064313+0100 liveactivitiesd Acquiring keep-alive with reason: Database default 11:01:59.064330+0100 liveactivitiesd Keep-alive reasons: ["Database": 2, "Received message": 1] default 11:01:59.064342+0100 liveactivitiesd Reduced budget for com.****.****test::pushToStart to: 9 default 11:01:59.064358+0100 liveactivitiesd Topic com.****.****test.push-type.liveactivity has remaining budget for pushToStart of 9 default 11:01:59.064369+0100 liveactivitiesd Topic com.****.****test.push-type.liveactivity has not used any budget for activity default 11:01:59.064436+0100 liveactivitiesd Scheduling wake to re-evaluate push subscription budgets at 2025-03-19 11:01:59 +0000 default 11:01:59.064547+0100 liveactivitiesd Earliest nonwaking date from task "Push server budget timeout expiration": 2025-03-19T12:01:59+01:00, finalWakeTarget: 2025-03-19T12:01:59+01:00 3599.999696 default 11:01:59.064593+0100 liveactivitiesd Earliest waking date from task "Push server budget timeout expiration": 2025-03-19T12:01:59+01:00, finalWakeTarget: 2025-03-19T12:01:59+01:00 3599.999651 default 11:01:59.064620+0100 liveactivitiesd Scheduling nonwaking task for: 2025-03-19T12:01:59+01:00 in 3599.999622s default 11:01:59.064659+0100 liveactivitiesd Scheduling waking task for: 2025-03-19T12:01:59+01:00 in 3599.999584s default 11:01:59.064671+0100 liveactivitiesd Acquiring keep-alive with reason: wake scheduling default 11:01:59.064692+0100 liveactivitiesd Keep-alive reasons: ["Database": 2, "Received message": 1, "wake scheduling": 1] default 11:01:59.064734+0100 liveactivitiesd Scheduling waking task for adjusted date: 2025-03-19T12:01:59+01:00 in 3599.999508s default 11:01:59.064768+0100 liveactivitiesd xpc_activity_register: com.apple.sessionkit.wake, criteria: dictionary default 11:01:59.064843+0100 liveactivitiesd Received pushToStart notification for com.****.****test::pushToStart default 11:01:59.064955+0100 liveactivitiesd Keep-alive reasons: ["Database": 2, "Received message": 1] default 11:01:59.064979+0100 liveactivitiesd Publishing event: timestamp: 2025-03-19 08:58:21 +0000; activityIdentifier: F432AB2F-1799-4437-B54B-6D9D70A0B260; eventType: start(SessionPushNotifications.PushEvent.EventType.ActivityStartParameters(attributesType: "SWAutomaticTripRecorderActivityAttributes", attributesData: 20 bytes, contentSourceRequests: [ActivityKit.ActivityContentSource.Request.push(request: ActivityKit.PushActivityContentSource.Request.push, target: ProcessDescriptor.Request("com.****.****test")), ActivityKit.ActivityContentSource.Request.process(target: ProcessDescriptor.Request("com.****.****test"))]))
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107
Mar ’25
Significant increase in 410 "Unregistered" responses from APNs when sending push notifications.
We are observing a significant increase in 410 "Unregistered/ExpiredToken" responses from APNs when sending push notifications after 20 July. According to documentation, this indicates that the device token is no longer valid for the specified topic. However, the sudden spike raises questions about whether there have been any recent updates or changes to APNs' token invalidation logic. Could you please confirm: Whether there have been any recent updates in APNs behavior related to 410 responses? If there are best practices or recommendations for handling large volumes of token invalidations in order to detect uninstallations?
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228
Aug ’25
APNs Notifications Always Failing – 0-Byte Response
Hello, We are currently facing a persistent issue where Apple Push Notifications (APNs) are no longer being delivered to devices. This is not an intermittent problem — push notifications have completely stopped working. We are using PushSharp.Apple (Version 4.0.10.0) to send the notifications. Current Behavior (Failing): Every notification request appears to be processed successfully from the server side. However, the APNs client receives a 0-byte response, and the server closes the connection. Devices do not receive the notifications at all. Logs from Current (Failing) State: APNS-Client[1]: Connected (Batch ID=1) APNS-Client[1]: Sent Batch, waiting for possible response... APNS-Client[1]: Received 0 bytes response... APNS-Client[1]: Server Closed Connection... APNS-Client[1]: Disconnected (Batch ID=1) For Reference – Successful Log From Earlier (When Notifications Worked): APNS-Client[1]: Connected (Batch ID=1) APNS-Client[1]: Sent Batch, waiting for possible response... APNS-Client[1]: Received -1 bytes response... Push Notification Successfully Sent to Device Any help, suggestions, or experience with similar issues would be greatly appreciated. Thanks!!!
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175
May ’25
Notification Service Extension Not Working
I've added a Notification Service Extension as a target to my React Native iOS app following Apple's official documentation. After completing all the setup steps as outlined in the documentation, the notification titles remain unchanged - notifications are arriving without any modifications, suggesting the extension isn't functioning properly.Testing Details: Sending notifications via Apple Push Notification Console Tested on iPhone 16 Pro Max (physical device) Tested on iPhone 15 Pro simulator Both show the same issue - no title modifications The extension appears to not be executing at all. Has anyone encountered similar issues with Notification Service Extensions in React Native projects, or can suggest troubleshooting steps to verify the extension is properly configured and running?
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242
Aug ’25
getDeliveredNotifications does not return notifications triggered by UNLocationNotificationTrigger
I am trying to retrieve delivered notifications using UNUserNotificationCenter.getDeliveredNotifications(completionHandler:), but I have encountered an issue: Notifications triggered by UNTimeIntervalNotificationTrigger or UNCalendarNotificationTrigger appear in the delivered list. However, notifications triggered by UNLocationNotificationTrigger do not appear in the list. Here is the code I use to fetch delivered notifications: UNUserNotificationCenter.current().getDeliveredNotifications { notifications in for notification in notifications { print("Received notification: \(notification.request.identifier)") } } The notification is scheduled as follows: let center = UNUserNotificationCenter.current() let content = UNMutableNotificationContent() content.title = "Test Notification" content.body = "This is a location-based notification." content.sound = .default let coordinate = CLLocationCoordinate2D(latitude: 37.7749, longitude: -122.4194) // Example coordinates let region = CLCircularRegion(center: coordinate, radius: 100, identifier: "TestRegion") region.notifyOnEntry = true region.notifyOnExit = false let trigger = UNLocationNotificationTrigger(region: region, repeats: false) let request = UNNotificationRequest(identifier: "LocationTest", content: content, trigger: trigger) center.add(request) { error in if let error = error { print("Error adding notification: \(error.localizedDescription)") } } Why does getDeliveredNotifications not return notifications that were triggered using UNLocationNotificationTrigger? How can I retrieve such notifications after they have been delivered?
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122
Mar ’25
Expected behavior for a Notification Service Extension with notification filtering when requestAuthorization has not been requested
If there is a Notification Service Extension which has the com.apple.developer.usernotifications.filtering entitlement, then does/how having that entitlement affect the preconditions for the NSE to be delivered a push? Specifically, if the app has not prompted for requestAuthorization() is it expected that the push will be delivered to the NSE or not? Thank you
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149
Sep ’25
Clarification on APNs MDM Push Certificate per-customer requirement for MSP/multi-tenant MDM
Hello Apple Developer Community, We’re building an MDM product (SaaS, multi-tenant). I’d like clarification on the APNs MDM push certificate usage model for service providers (MSPs). Question: Is it acceptable for an MDM vendor to use a single APNs MDM push certificate owned by the vendor to manage devices for multiple, independent customer organizations? Or is it required/recommended that each customer (company) must obtain and use its own APNs MDM push certificate (issued under the customer’s Apple ID) for their tenant? Why we’re asking: We understand that many guides show the process where each customer logs into the Apple Push Certificates Portal with their own Apple ID, uploads a CSR provided by the MDM, and then renews yearly. Practically, for a small team and early-stage deployments, using one vendor-owned certificate across multiple tenants would be simpler. We want to ensure we’re not violating any policy, terms, or technical requirements (e.g., certificate ownership, topic binding, device token isolation, audit/compliance expectations). What we need from Apple (or authoritative sources): An official Apple document or policy that clearly states whether per-customer certificates are mandatory vs strongly recommended for MSP/multi-tenant MDMs. If per-customer is mandatory, please point to the relevant clause or section. If a vendor uses a single certificate for multiple organizations, what risks or consequences should we expect (e.g., compliance issues, supportability, potential program violations, off-boarding problems, etc.)? Context: We’re sending only MDM wake notifications (standard MDM flow). We understand certificates expire yearly and must be renewed with the same Apple ID to avoid device re-enrollment. We want to follow Apple’s best practices while keeping early operations manageable. Any guidance, links to official documentation, or clarification from Apple engineers/moderators would be greatly appreciated. Thank you!
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191
Oct ’25
[App Store Server Notifications] ONE_TIME_CHARGE production release...
Dear Apple! During WWDC24 you announced that ONE_TIME_CHARGE notification is available on the sandbox environment and will be available "it will be available in production later this year" - it's March 2025 and there is still no production release of this feature. Could you share some timeline and plans for when we can expect that feature deployed to production? Thanks in advance!
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93
May ’25
Error when validating the APNS Certificate
I trying to validate the certificate I created for APNS using the following command but I get an error. openssl s_client -connect gateway.push.apple.com:2195 -cert temp.pem -debug -showcerts Error: getaddrinfo: nodename nor servname provided, or not known connect:errno=0 Any help will be greatly appreciated.
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176
Sep ’25
Notification easy control
Dear Apple Team, I hope this message finds you well. I wanted to share a playful and innovative idea that could enhance the iPhone experience—particularly when viewing content in full-screen mode through apps like Apple TV or YouTube. Feature Concept: Hands-Free Dismissal of Notifications When the iPhone is in landscape mode, incoming notifications can interrupt the viewing experience. While Focus Mode and swipe gestures help, I thought of a more intuitive and hands-free interaction: using a light puff of air directed toward the screen to dismiss a notification. This interaction could use the microphone or other onboard sensors to detect a brief burst of air, providing a fun and natural way to maintain immersion without touching the device. If this isn’t feasible with current hardware, here are a few alternative concepts that align with the same goal: Blink to Dismiss: Using Face ID sensors to detect a quick blink as a hands-free gesture. Shake to Dismiss: A gentle shake gesture when holding the iPhone in one hand. Gaze-Based Dismissal: Notifications automatically disappear after a brief moment of eye contact. These ideas could offer both accessibility benefits and a touch of delight—making the iPhone feel even more magical and responsive. Thank you for your time and for considering this suggestion! Warm regards, Badhan Baidya
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149
Sep ’25
React Native iOS - Notification Service Extension Not Working
I've added a Notification Service Extension as a target to my React Native iOS app following Apple's official documentation. After completing all the setup steps as outlined in the documentation, the notification titles remain unchanged - notifications are arriving without any modifications, suggesting the extension isn't functioning properly.Testing Details: Sending notifications via Apple Push Notification Console Tested on iPhone 16 Pro Max (physical device) Tested on iPhone 15 Pro simulator Both show the same issue - no title modifications The extension appears to not be executing at all. Has anyone encountered similar issues with Notification Service Extensions in React Native projects, or can suggest troubleshooting steps to verify the extension is properly configured and running?
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102
Aug ’25
My app suddenly cannot receive push notifications
My app(The Smart Life app) is unable to receive push notifications. Please confirm whether APNs has received push notifications from Alibaba Cloud and whether APNs has successfully pushed notifications to the Smart Life app.The Smart Life app uses Alibaba Cloud's push notification service. The message ID pushed by Alibaba Cloud is: f7a02288-a995-47ed-b417-837461028f03 Current Symptom: Alibaba Cloud has reported that this message has been successfully pushed to APNs, but the smart life app has not received any push notifications. The feedback log from Alibaba Cloud shows that the APNs push was successful, but the smart life app did not receive any push. Because APNs do not have message receipts and Alibaba Cloud cannot obtain notification delivery status, it is recommended that I use the APNs channel message ID to submit a work order to Apple technical support for investigation. Note: All push notification permissions for the Smart Life app are enabled, and the Smart Life app is in the foreground when push notifications are sent.
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106
Sep ’25
What is the point of thread-id/grouping in push notifications if grouping depends upon user preferences?
There's plenty of articles out there about programatically grouping push notifications. However I have tried setting the thread-id in the push payload when sending a push, or setting the threadIdentifier for a received push in a notification service extension to be the same for several pushes. But if within the iPhone Settings / Notifications the user selects to display pushes as List and turns off Notification Grouping, then each notification resulting from the push appears on its own separately. Is there something other than thread-id/threadidentifier that is used to programmatically group them? If not then whats the point of these as grouping and display is actually under the control of user.
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98
Mar ’25
APNs Feedback Service Domain Unavailable
The APNs Feedback Service domain “feedback.push.apple.com” was deprecated on March 31, 2021, and became unavailable after August 2025 due to domain name resolution failures. Will this feedback service become available again in the future? Also, is it possible to use the APNs Feedback Service with a domain different from “feedback.push.apple.com”?
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73
Sep ’25
Live activity push is not work
Hey there,i start a live activity,but it not works, and sometime it can work; apns-unique-id 46445cfa-1bf6-0f63-5ea3-2afa53e02b0d and it show that " 2025年5月19日 GMT+8 15:13:25.836 received by APNS Server 2025年5月19日 GMT+8 15:13:26.244 discarded as application was not registered" but i did not know how can i do; thanks for you help
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102
May ’25
didRegisterForRemoteNotificationsWithDeviceToken Not Called on iOS 18.1.1
I'm experiencing issues with didRegisterForRemoteNotificationsWithDeviceToken not being called on iOS 18.1.1. Here's what I've tried: Basic Setup: Properly configured UNUserNotificationCenter Requested permissions with requestAuthorization(options:) Registered for remote notifications with registerForRemoteNotifications() Environment: Xcode 16.3 iOS 18.1.1 (physical device) Firebase (tried with and without it) Troubleshooting: Verified provisioning profile includes Push Notifications Confirmed APNs certificate is valid Disabled Firebase's method swizzling Tested on a clean project (works fine) Checked device logs (no relevant errors) Code Snippet: // In AppDelegate.swift public func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) { let tokenParts = deviceToken.map { data in String(format: "%02.2hhx", data) } let tokenString = tokenParts.joined() print("📱 Device Token: \(tokenString)") // Store the token for your backend UserDefaults.standard.set(tokenString, forKey: "deviceToken") // Send to backend Task { do { try await APIService.shared.setDeviceToken(tokenString) } catch { print("❌ [AppDelegate] Failed to send device token to backend: \(error)") } } } public func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]? = nil) -> Bool { // IMPORTANT: First handle push notification registration UNUserNotificationCenter.current().delegate = self // Request notification permissions self.requestNotificationPermissions() // Register for remote notifications DispatchQueue.main.async { UIApplication.shared.registerForRemoteNotifications() } return true } private func requestNotificationPermissions() { UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .badge, .sound]) { granted, error in guard granted else { print("❌ Notification permission not granted") return } print("✅ Notification permission granted") } }
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105
May ’25
Notification coordination between iOS and watchOS is not working properly
Notification coordination between iOS and watchOS is not working properly watchOS and iOS try to coordinate between phone and watch notifications. The concept here is that if there is a main app and a companion app, they could both be sending a notification, then the notification would alert on both, which is a deviation from how notification mirroring is handled if there is an iOS app but no watch app. The watch waits for the iOS notification to fire so they can determine if this is the same notification that needs to be deduped, displayed on one device but not the other, or separate notifications to be displayed both. If there is no notification on the phone, the watch will timeout after 13 seconds and alert anyway. If you have an iOS companion app, the best solution to this is to send the same notification on both devices simultaneously, and ensuring the UNNotificationRequest.identifier matches on both notifications. This will let the systems determine how to handle the notification correctly and quickly, and the notification will alert right away. https://developer.apple.com/forums/thread/765669 According to the above article, "when a notification arrives on watchOS alone first, it coordinates with iOS," but in reality, it doesn't work properly. Detailed process of this phenomenon watchOS receives a notification. On watchOS, the notification is not immediately shown to the user. iOS receives a notification with the same UNNotificationRequest.identifier as in (1). The notification in (3) does not appear on either iOS or watchOS. However, the notification from (3) does appear in iOS Notification Center. Thirteen seconds after watchOS received the notification, the notification from (1) is shown to the user on watchOS. In the end, the iOS and watchOS notifications are not consolidated and each remains in its respective notification center. Up to (3) there are no issues. Starting with (4), both iOS and watchOS exhibit a lot of odd behavior. This phenomenon occurs with both local notifications and push notifications. When iOS receives the notification first, there is no problem. The notification for watch received later is processed appropriately, and the watchOS notification is not additionally displayed to the user. Expected proper process Same as above. Same as above. Same as above. The notification in (1) is integrated into the notification in (3). The notification in (3) is alerted to the user immediately. 2 sample projects to reproduce Only the main code is attached. Sample project1: local notifications Swift code for local notification app (iOS, watchOS) - App.swift.txt Sample project2: push notifications This sample project is implemented using Firebase Functions and Firebase Cloud Messaging. Swift code push notification app (iOS, watchOS) - App.swift.txt Server side JavaScript code for FirebaseFunction - index.js.txt Tested devices and OS This phenomenon occurred in both of the following patterns. Pattern 1 Xcode 26.0 iPhone 16 (iOS 26.0) Apple Watch series 10 (watchOS 26.0) Pattern 2 Xcode 16.4 iPhone 11 (iOS 18.6) Apple Watch SE 2nd gen (watchOS 11.6) Question Is this phenomenon a bug? Or is my understanding or implementation incorrect? Feedback Assistant number FB20339772
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178
Sep ’25