Notifications

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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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AlarmKit alarms do not fire when foregrounded app is in landscape
Hello! When setting an alarm in an AlarmKit app, the alarm will not fire properly/reliably (the alert presentation is not shown) while the device has an app foregrounded in the landscape orientation. This behaviour has been present since the betas, however until the first party Reminders app showed the behaviour in the iOS 26.2 beta I suspected the issue was in my own code. The behaviour is exhibited when scheduling alarms in several AlarmKit apps: The Reminders app The AlarmKit WWDC Demo Project My own AlarmKit app However alarms scheduled by the stock Clock app do not seem to exhibit the behaviour. Minimal repro with first party app: Be using iOS 26.2 beta Open Reminders app Create an urgent reminder for a time in the not too distant future Open Mail.app Change to landscape orientation Wait for the fire time Observe the phone vibrates at the correct time but no alarm is fired Drag the notifications pane down, observe the LiveActivity has been started Change to portrait orientation Observe alarm fires I have noticed this behaviour from the AlarmKit apps mentioned while foregrounding other apps besides Mail, both first and third party: Photos YouTube Netflix The behaviour does not seem to occur when the foregrounded app is restricted to portrait mode, no matter the actual orientation of the device. In the case of my own app I have tried a multitude of ideas to get it to work reliably, getting alarms to fire in landscape is very intermittent at best and most often works after a fresh reboot. I've submitted a Feedback for the Reminders app: FB20956492. Any advice or suggestions would be appreciated!
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159
Nov ’25
Carplay not read incoming chat message like whats app.
We have implemented Carplay in our voip based project and in this we have implemented Incoming call and chat notification feature for Carplay. For Carplay we implemented siri. Siri Object donated Successfully in Notification service Extension when notification didreceive method called. Donation Code :- func donateIncomingMessageIntent(sender: String, senderId: String, message: String, messageId: String, userInfo: [AnyHashable: Any],destination:String) { // Create proper name components clearAllinteraction() var nameComponents = PersonNameComponents() nameComponents.givenName = sender //unknown let senderPerson = INPerson( personHandle: INPersonHandle(value: senderId, type: .unknown), nameComponents: nameComponents, displayName: sender, image: nil, contactIdentifier: senderId, customIdentifier: "sender_\(senderId)" ) let recipientPerson = INPerson( personHandle: INPersonHandle(value: "me@example.com", type: .emailAddress), nameComponents: nil, displayName: "Me", image: nil, contactIdentifier: "me_id", customIdentifier: "user_id" ) let inMessage = INMessage( identifier: messageId, conversationIdentifier: "conversation_\(senderId)", content: message, dateSent: Date(), sender: senderPerson, recipients: [recipientPerson], groupName: nil, messageType: .text ) let intent = INSearchForMessagesIntent( recipients: [recipientPerson], senders: [senderPerson], searchTerms: [message], attributes: .unread, dateTime: nil, identifiers: [messageId], notificationIdentifiers: [messageId], groupNames: ["Messages"] ) let interaction = INInteraction(intent: intent, response: nil) interaction.identifier = "message_\(messageId)" interaction.direction = .incoming // Add direction DispatchQueue.global(qos: .userInitiated).async { interaction.donate { error in if let error = error { print("❌ Failed to donate INSearchForMessagesIntent: \(error.localizedDescription)") } else { print("✅ Donated INSearchForMessagesIntent successfully!") let intentData: [String: Any] = [ "senderName": sender, "senderId": senderId, "message": message, "messageId": messageId, "timestamp": Date().timeIntervalSince1970, "conversationId": "conversation_\(senderId)", // Add conversationId "destination":destination ] let defaults = UserDefaults(suiteName: "group.com.chatapp") // 🔁 Use your App Group ID defaults?.removeObject(forKey: "lastCarPlayIntentData") defaults?.set(intentData, forKey: "lastCarPlayIntentData") defaults?.synchronize() } } } } Here SenderID is like 3000@abc,2000@abc etc. In siri ,When we handle INSearchForMessagesIntent at that time all data getting from Userdefaults because without Userdefaults INSearchForMessagesIntent value nil. Even we enabled announcement using .allowAnnouncement. We also tried to save same sender in contact Book because sometime siri search contact and not found then may be raise this type of issue. So we need code level support for read incoming message in carplay when notification comes. Thank you.
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116
May ’25
Skipping Notifications permission alert on sequoia
Hello, it seems like starting from iOS 18.0, it is possible to entirely skip the notifications permission request alert by swiping up from the bottom of the screen. It doesn't work this way with any other kinds of system alerts, nor in iOS 17.4 (tested it in the Simulator though). So, is it a bug? Or is it intended? Either way, I haven't found any information regarding that. The problem with that is when you skip the alert, notifications are missing from the app preferences.
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353
Jan ’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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91
May ’25
PushKit (VoIP) delivery issue — user’s device fails to receive VoIP pushes; logging in on that device suppresses VoIP pushes for all devices of that user
We are facing an issue where VoIP notifications are not delivered to a user's device. If we login with the user credentials on another device the VoIP notifications are being received, if he logs in on his device VoIP notifications are not being received anymore on all devices. So When the user logs in on the affected device, all devices on that account stop receiving VoIP pushes (including the affected one). Logging out on the affected device restores delivery to other devices. What could cause this issue? It's only happening for this user so the configuration and mobile app PushKit code is working as intended.
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131
Oct ’25
Silent Push notifications XCode 16.3 stop working on production
Hello, we have recently started signing and building our applications using Xcode 16.3. Since we made this change, we’ve noticed that the applications have stopped receiving silent push notifications (content-available: 1) when they are distributed via TestFlight or the App Store, even though we haven’t changed anything in the way these notifications are sent. As I mentioned, this started happening after migrating our project from Xcode 15 to Xcode 16.3. Regular push notifications are still working as expected, but silent ones are not being received by the apps. We are desperate because we rely on these silent notifications to inform the apps of updates, and we haven’t been able to identify the root cause of the issue.
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84
May ’25
Push notifications to api.push.apple.com sometimes fail
We have a case when we send 8 push notifications more or less simultaneously over 1 HTTP 2.0 connection. Using .NET Core 8 Sometimes some of them fail with a strange message: System.Net.Http.HttpRequestException: The response ended prematurely while waiting for the next frame from the server. (ResponseEnded) ---> System.Net.Http.HttpIOException: The response ended prematurely while waiting for the next frame from the server. (ResponseEnded) at System.Net.Http.Http2Connection.ThrowRequestAborted(Exception innerException) at System.Net.Http.Http2Connection.Http2Stream.TryEnsureHeaders() at System.Net.Http.Http2Connection.Http2Stream.ReadResponseHeadersAsync(CancellationToken cancellationToken) at System.Net.Http.Http2Connection.SendAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken) --- End of inner exception stack trace --- at System.Net.Http.Http2Connection.SendAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken) at System.Net.Http.HttpConnectionPool.SendWithVersionDetectionAndRetryAsync(HttpRequestMessage request, Boolean async, Boolean doRequestAuth, CancellationToken cancellationToken) at System.Net.Http.RedirectHandler.SendAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken) at System.Net.Http.DecompressionHandler.SendAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken) at Microsoft.Extensions.Http.Logging.HttpClientLoggerHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken) We noticed that failure is always accompanied with a huge delay (~500ms) comparing to success (~20ms). Also some of the burst messages are sent successfully (sometimes 2-4 of them) What can we do about it?
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494
Feb ’25
How to re-enable entitlements after App Transfer? (Location Push Service Extension)
Hi Apple team and fellow developers, We previously had Location Push Service Extension enabled and working in production. After transferring the app to a new Apple Developer team, the production App ID was transferred, but the Location Push entitlement was not retained. We've also created a new App ID for development, and now need Location Push access enabled for both the transferred production ID and the new development ID. We’ve already submitted the Location Push Access form with all relevant details. Unfortunately, the App Transfer documentation didn’t make it clear that Location Push access would be lost, and now we’re blocked from making new builds — even for the existing production app. ❓ Questions: Is it possible to re-enable Location Push for a transferred App ID? What’s the expected timeline for entitlement approval? Can Apple staff confirm the request status or let us know if any further action is needed? Thanks in advance — this entitlement is critical for our app’s functionality and release pipeline. Best, Aidar
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82
May ’25
Case-ID: 14080335 Push notification requests to iOS devices using APNs (HTTP/2) time out
We are currently developing a WebAPI service that uses APNs (HTTP/2) to send push notifications to iOS devices. (Using PushSharp's HTTP/2 support) The WebAPI service is running on IIS using .net framework 4.8 and c#. The connection to APNs is always maintained, and the connection is checked every 30 minutes using a dummy token Ping. KeepAlivePeriod = 30 minutes and KeepAliveRetryPeriod = 10 seconds have also been set. However, the following issues are occurring. Although the Ping sent immediately before was successful, a TimeoutException occurs in the notification request sent a few minutes later. There is no explicit disconnection notification from APNs, and the connection appears to be silently disconnected. Once a TimeoutException occurs, it occurs frequently afterwards. Below is an excerpt from the log. Apple Notification Failed for some unknown reason 1-1: One or more errors occurred. Apple Notification Failed for some unknown reason 1-2:System.TimeoutException: The operation timed out. In light of this issue, I would like to be advised on the following two points. Are there any official specifications regarding the lifecycle and expiration date of APNs HTTP/2 connections? Even if pings are sent periodically, is there a timeout or other setting that disables the connection on the APNs side? What are the conditions that would cause APNs to silently terminate a connection? For example, could this be due to inactivity, TLS restrictions, network maintenance, etc.? If you have any official documentation or technical guidelines to improve the reliability of this system, we would appreciate it if you could share them with us. Thank you in advance.
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262
May ’25
Server notifications v2 UNSUCCESSFUL_HTTP_RESPONSE_CODE
Hello. I'm currently implementing Apple Notification v2 to prepare for refunds for in-app purchases, but I'm not receiving requests from Apple servers to my backend server. I've applied HTTPS (TLS 1.2) and correctly registered production/sandbox notification URLs on App Store Connect. After requesting a test notification, when I check the status of testNotificationToken, I receive an UNSUCCESSFUL_HTTP_RESPONSE_CODE as follows: {"signedPayload":"......":[{"atteptDate":1752128001970,"sendAttemptResult":"UNSUCCESSFUL_HTTP_RESPONSE_CODE"}]} The endpoint for receiving notifications is set to accept POST requests with application/json format, and it responds with 200 (OK) without any content. However, Apple notifications are not coming through. Could anyone help me with this issue?
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80
Jul ’25
SHA-2 Root: USERTrust RSA Certification Authority certificate.
Got notification to update this certificate - there was a link to Sectigo.com where I found an attachment with that name - when I clicked it I got a box where it said to install it. Clicked the box and it was saved somewhere on my computer. Now I dont know if that's it or I need to take further actions - please help :-) Have no experience with this - my collegue who did this has stopped. Hoping for a simple answer :-) P
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549
Feb ’25
CloudKit Subscriptions Not Triggering Push Notifications - No NotificationSend Events
ISSUE: CloudKit subscriptions are not triggering push notifications despite correct configuration. CloudKit logs show RecordSave events but NO NotificationSend events, indicating CloudKit is not attempting to send to APNS. CONTAINER: iCloud.Wunderkind.StrikeForceApp ENVIRONMENT: Tested in both Development and Production iOS 18.6.x Xcode 15.x (update with your version) Device: iPhone (not simulator) EVIDENCE: Subscriptions exist and are visible in CloudKit Dashboard Records are being created successfully (verified in logs) Device token is registered: 60eb962ff189dc5c2c0ef3e9d6643d72b4442a831bae224d2a553588b2e29139 Local notifications work correctly CloudKit logs show RecordSave but NO NotificationSend events STEPS TAKEN: Regenerated push certificates Disabled and re-enabled Push Notifications capability Deleted and recreated subscriptions Tested in both Development and Production environments Verified aps-environment entitlement matches environment Confirmed notification permissions granted SPECIFIC TEST: Creating a Challenge record with recipientRef matching my user triggers: ✅ RecordSave event in CloudKit logs ❌ No NotificationSend event ❌ No push notification received EXPECTED: CloudKit should send NotificationSend events and deliver push notifications when subscriptions match. ACTUAL: No NotificationSend events appear in CloudKit logs, no notifications delivered.
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140
Sep ’25
Extend of notification content
In iOS 26, I can check the notification that arrives to the user when the AirPods or Apple Watch is fully charged. When tap the notification, notification only expands and does not include actions such as moving to an app. I checked the documents of UserNotification and UNNotificationServiceExtension, but I couldn't find what I wanted. I can expand by long-tapping as default, but I'm looking for a way to expand it without entering the app when I tap the notification. I wonder if there is an API that I missed or if it's not publicly supported. thank you for your support.
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113
Sep ’25
Discrepancy between App Store Server API `expiresDate` and iOS Settings subscription expiration date
I am developing an iOS app that uses App Store Server API (v2) for auto-renewable subscriptions. I noticed a discrepancy between the expiration date returned by the API and the date displayed in iPhone Settings > Subscriptions: App Store Server API expiresDate: 2025-09-12T12:10:25 (KST) iOS Settings > Subscriptions: 2025-09-11 (one day earlier) My understanding: The API’s expiresDate is the precise UTC timestamp. The Settings UI might display the "last full calendar day" for UX purposes. Questions: Is this behavior (UI showing one day earlier) an intentional Apple policy? If so, is there any official documentation or guideline explaining this behavior? Should developers always rely on the API’s expiresDate for subscription state management? This discrepancy is confusing for both developers and end users, so any clarification or official reference would be greatly appreciated.
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102
Sep ’25
Using notifyUserWithHaptic for Background Alarms in Standalone Watch App
I’m building a standalone Apple Watch smart alarm app that should trigger alarms on the watch in response to Bluetooth or internet events. This means the app operates in the background and attempts to trigger an alarm when such an event occurs. As far as I know, the appropriate API for this is WKExtendedRuntimeSession.notifyUserWithHaptic:repeatHandler. However, I can’t seem to start an extended runtime session while the app is in the background. I’m getting the following error: -[WKExtendedRuntimeSession _invalidationReasonAndDelegateCallbackErrorForError:outCallbackError:]:729: WKExtendedRuntimeSession hit internal error. Error Domain=com.apple.CarouselServices.SessionErrorDomain Code=17 "startSession cannot be called on a scheduled session" UserInfo={NSLocalizedDescription=startSession cannot be called on a scheduled session} Calling notifyUserWithHaptic directly also similarly fails. It seems notifyUserWithHaptic is intended to be scheduled during a foreground session to trigger at a later time, rather than being called ad hoc from a background context. Is there any way to create a proper alarm view on the Apple Watch from a background execution context?
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127
Jul ’25
Is the Time Sensitive Notification entitlement needed for visionOS?
I noticed the time sensitive entitlement says it's only for iOS and macOS. But without the entitlement, the time sensitive toggle doesn't show in my app's notification settings on visionOS. When I archive my visionOS app for App Store Connect, the entitlement seems to be taken out as it doesn't show in my entitlement list for the build in App Store Connect. I'm confused at this point if the entitlement is really necessary, since it seems to be needed to debug on the simulator at least. I don't have a physical device to test it on unfortunately.
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381
Feb ’25
Unable to install an app extension when running it for debugging
I've got an app with several app extensions (call extension, action extension, notification service extension, message filtering extension, notification content extension). If I need to interactively debug these then I can select the scheme and run the extension within Xcode for all of them except for the notification content extension, with that I get an error dialog summary saying: Failed to install the app on the device / The provided item to be installed is not of a type that CoreDevice recognizes. Which when expanded has the blumpf posted below. Why can I not run the notification content extension, when I can run any other type of app extension? Failed to install the app on the device. Domain: com.apple.dt.CoreDeviceError Code: 3002 Failure Reason: The provided item to be installed is not of a type that CoreDevice recognizes. User Info: { DVTErrorCreationDateKey = "2024-12-27 16:39:54 +0000"; IDERunOperationFailingWorker = IDEInstallCoreDeviceWorker; NSURL = "file:///Users/Me/Library/Developer/Xcode/DerivedData/XFinity-celiagrvtevxcagztrguseawvjkl/Build/Products/Debug.Ceq.QA-iphoneos/NotificationContentExtension.appex"; } -- Event Metadata: com.apple.dt.IDERunOperationWorkerFinished : { "device_identifier" = "00008101-00115D623460001E"; "device_isCoreDevice" = 1; "device_model" = "iPhone13,3"; "device_osBuild" = "18.2 (22C152)"; "device_platform" = "com.apple.platform.iphoneos"; "device_thinningType" = "iPhone13,3"; "dvt_coredevice_version" = "397.28"; "dvt_coresimulator_version" = "993.7"; "dvt_mobiledevice_version" = "1759.40.2.100.1"; "launchSession_schemeCommand" = Run; "launchSession_state" = 1; "launchSession_targetArch" = arm64; "operation_duration_ms" = 7; "operation_errorCode" = 3002; "operation_errorDomain" = "com.apple.dt.CoreDeviceError"; "operation_errorWorker" = IDEInstallCoreDeviceWorker; "operation_name" = IDERunOperationWorkerGroup; "param_debugger_attachToExtensions" = 0; "param_debugger_attachToXPC" = 1; "param_debugger_type" = 1; "param_destination_isProxy" = 0; "param_destination_platform" = "com.apple.platform.iphoneos"; "param_diag_113575882_enable" = 0; "param_diag_MainThreadChecker_stopOnIssue" = 0; "param_diag_MallocStackLogging_enableDuringAttach" = 0; "param_diag_MallocStackLogging_enableForXPC" = 1; "param_diag_allowLocationSimulation" = 0; "param_diag_checker_tpc_enable" = 1; "param_diag_gpu_frameCapture_enable" = 0; "param_diag_gpu_shaderValidation_enable" = 0; "param_diag_gpu_validation_enable" = 0; "param_diag_guardMalloc_enable" = 0; "param_diag_memoryGraphOnResourceException" = 0; "param_diag_mtc_enable" = 0; "param_diag_queueDebugging_enable" = 1; "param_diag_runtimeProfile_generate" = 0; "param_diag_sanitizer_asan_enable" = 0; "param_diag_sanitizer_tsan_enable" = 0; "param_diag_sanitizer_tsan_stopOnIssue" = 0; "param_diag_sanitizer_ubsan_enable" = 0; "param_diag_sanitizer_ubsan_stopOnIssue" = 0; "param_diag_showNonLocalizedStrings" = 0; "param_diag_viewDebugging_enabled" = 1; "param_diag_viewDebugging_insertDylibOnLaunch" = 1; "param_install_style" = 2; "param_launcher_UID" = 2; "param_launcher_allowDeviceSensorReplayData" = 0; "param_launcher_kind" = 0; "param_launcher_style" = 0; "param_launcher_substyle" = 2; "param_runnable_appExtensionHostRunMode" = 0; "param_runnable_productType" = "com.apple.product-type.app-extension"; "param_structuredConsoleMode" = 1; "param_testing_launchedForTesting" = 0; "param_testing_suppressSimulatorApp" = 0; "param_testing_usingCLI" = 0; "sdk_canonicalName" = "iphoneos18.2"; "sdk_osVersion" = "18.2"; "sdk_variant" = iphoneos; } -- System Information macOS Version 14.7 (Build 23H124) Xcode 16.2 (23507) (Build 16C5032a) Timestamp: 2024-12-27T08:39:54-08:00
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774
Jan ’25
Status of Action Required: Apple Push Notification Service Server Certificate Update
According to the Apple notification alert received in October 2024, the APNS server certificate update for production is scheduled for February 24, 2025. Has this change been implemented, or is there a platform or method to verify whether this update has been applied in production? If so, where can we check this?"
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323
Feb ’25