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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Broadcast Push Notifications - Update ignored
I want to update my lockscreen LiveActivity via Broadcast Push Notification, but updating always fails - but ending always works. Payload with "update" is completely ignored: {"aps":{"timestamp":1685952000,"event":"update","content-state":{"currentSlotName":"Debug1","nextSlotName":"Debug2"}}} Same payload with "end" works, the view is refreshed with the new content-state: {"aps":{"timestamp":1685952000,"event":"end","content-state":{"currentSlotName":"Debug1","nextSlotName":"Debug2"}}} Via the MacOS Console I am able to see that both events happen to end up on the device. I am sending these Broadcast Push Notifications via Apple's Push Notifications Console.
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291
Mar ’25
Apple CarPlay Notifications - Tap action handler
I am developing a CarPlay driving tasks app and is able to display push notifications on CarPlay. I am looking at a way to get a tap action handler for push notifications on CarPlay such that when a user taps the notification and by default the app opens, but I want to present a CPInformationTemplate with data corresponding to the tapped notification.
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121
Oct ’25
Push payload is not present on notification tap
I am checking if the user taps on the firebase push notification and get the payload. override func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) { let userInfo = response.notification.request.content.userInfo os_log("notification tapped %{public}@", log: OSLog.push, type: .info, userInfo) handleNotificationPayload(userInfo as! [String: AnyObject]) setFlutterLinkClickedVariable() } My use case is in app terminated state when push notification is tapped, get the link from payload and navigate to corresponding screen based on the link. This is working when there is only one push notification. When there are multiple push notifications with different links in the payload, only the first notification I tap works. Rest of the notifications just launches the app and does not navigate because the link is not set. I am getting the link from the payload and invoking flutter code which sets the link in the user defaults (shared preferences) and when the app launches in the home screen it checks for this variable and navigates accordingly. func handleNotificationPayload(_ payload: [String: AnyObject]) { if let link = payload["link"] as? String { setFlutterLinkVariable(link) } } override func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable : Any], fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void) { os_log("app did receive remote notification %{public}@", log: OSLog.push, type: .info, userInfo) handleNotificationPayload(userInfo as! [String : AnyObject]) completionHandler(.newData) } Currently when there is only one push notification it works because the link is set from the above method. The click delegate is not calling. I did set the delegate in application(:didFinishLaunchingWithOptions). UNUserNotificationCenter.current().delegate = self application.registerForRemoteNotifications() How to solve this issue? Thanks.
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785
Apr ’25
push notifications are not receiving to device
iOS push notification is not working for in App since 03-Apr-2025. We are pushing the message to APNS from our application, but message is not delivered to iOS device. We have performed tests on both PROD and QA environment and following are the observations: PROD successfully pushing the notification to APNS but not receiving the notification on iOS device (100% failure). QA received notification on iOS device always (100% success). Analyzed PROD notification server log at our end and we do not observe any error and it is showing successful also when message is pushed to APNS all the time. Need to check from APNS why push messages are not delivered to iOS devices. Validated the PROD APNS certificate at our end which we are using during call to APNS - it is valid till Oct 2025. Please suggest me any possible solution because I don't have any clue where it is failing and what to do
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183
Apr ’25
APNS notifications - too quiet custom sound
Our application is designated to be used in a quite noisy environment (childcare facility) so we have implemented really annoying custom sounds. Unfortunately the system audio session playing custom sounds is apparently limited to half of the device volume possibility, even though the user sets full volume in the settings. How to change this behaviour to get louder notification sounds? To be clear, I don't want to overcome user settings. If the user sets quieter volume or he sets the silent mode, the application should be silent too. I just need that 100% volume settings is actually 100% device volume. This is a really critical feature for us and for our customers. We have already tried to ask for the critical alerts and we have been rejected.
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141
Jan ’26
Clarification about ANCS being unavailable
Hello, I am working on a project that involves using external device to connect over BLE with users iPhone. I would like to be able to notify users on our device about eg. incoming calls, messages etc. I have been succesfull in using ANCS to achieve that but I am a little worried around consistency of this solution, especially taking into account following line from documentation: Due to the nature of iOS, the ANCS is not guaranteed to always be present. As a result, the NC should look for and subscribe to the Service Changed characteristic of the GATT service in order to monitor for the potential publishing and unpublishing of the ANCS at any time. I have not been able (yet?) to find or identify circumstances when ANCS would not be avilable or would be "removed in runtime", hence would it be possible to request some guidance and clarification on the conditions when ANCS can be unavailable or removed? Thank you!
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152
Apr ’25
APNs Returning 200 OK for Uninstalled Apps Instead of 410 Error
We're experiencing an issue with Apple Push Notification service where APNs continues to return 200 OK responses for device tokens belonging to uninstalled applications. Issue Details: When sending push notifications to device tokens. APNs returns 200 OK responses even for devices where our app was uninstalled more than a month ago According to documentation(https://developer.apple.com/documentation/usernotifications/handling-notification-responses-from-apns), APNs should return 410 status code with JSON body for invalid tokens Expected Behavior: APNs should return 410 status code when device token is no longer valid (app uninstalled) Thanks in advanced for support
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133
Jul ’25
Posting a local notifications (or alert) from a launch agent
My Mac app has a launch agent (within the app bundle) that works great without the app running. There are some occasions where I need to display an alert and ask the user to launch the app to handle the issue. I thought about using UNUserNotificationCenter but I'm not able to make it work from the agent. I'm asking for authorization as follows: [center requestAuthorizationWithOptions:(UNAuthorizationOptionAlert | UNAuthorizationOptionSound | UNAuthorizationOptionBadge) completionHandler:^(BOOL granted, NSError * _Nullable error) { NSLog(@"authorization request completion. Granted: %@, error: %@ (%@)",granted?@"YES":@"NO",error, [error localizedDescription]); }]; And I'm trying to post the notification as follows: content.title = @"Your App Name"; content.body = @"Click the button to open the app"; content.sound = [UNNotificationSound defaultSound]; UNNotificationRequest *request = [UNNotificationRequest requestWithIdentifier:[[NSUUID UUID] UUIDString] content:content trigger:nil]; [center addNotificationRequest:request withCompletionHandler:^(NSError * _Nullable error) { if (error) { NSLog(@"Error showing notification: %@ %@", error, [error localizedDescription]); } }]; When running I'm getting asked to authorize, I authorize and all seems OK in system settings but I'm not able send any notifications. addNotificationRequest results in UNErrorCodeNotificationsNotAllowed error. I tried this with the authorization request inside the main app, or inside the agent, with the same results. When trying to post the notification from within the app, it does work, but that's not what I need. Is posting notifications from within the launch agent not possible at all, or is there anything here that I'm missing. TIA
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174
Oct ’25
Rewrite `UNNotificationServiceExtension` sub class into Swift 6 async await notation
I'm trying to rewrite a Swift code to Swift 6 language mode and am stuck with this problem. How do I safely pass the bestAttemptContent and contentHandler to the Task? This is from the UNNotificationServiceExtension subclass. final class NotificationService: UNNotificationServiceExtension { var contentHandler: ((UNNotificationContent) -> Void)? var bestAttemptContent: UNMutableNotificationContent? var customNotificationTask: Task<Void, Error>? override func didReceive(_ request: UNNotificationRequest, withContentHandler contentHandler: @escaping (UNNotificationContent) -> Void) { self.contentHandler = contentHandler bestAttemptContent = (request.content.mutableCopy() as? UNMutableNotificationContent) guard let bestAttemptContent = bestAttemptContent else { invokeContentHandler(with: request.content) return } do { let notificationModel = try PushNotificationUserInfo(data: request.content.userInfo) guard let templatedImageUrl = notificationModel.templatedImageUrlString, let imageUrl = imageUrl(from: templatedImageUrl) else { invokeContentHandler(with: bestAttemptContent) return } setupCustomNotificationTask( imageUrl: imageUrl, bestAttemptContent: bestAttemptContent, contentHandler: contentHandler ) } catch { invokeContentHandler(with: bestAttemptContent) } } // More code private func downloadImageTask( imageUrl: URL, bestAttemptContent: UNMutableNotificationContent, contentHandler: @escaping (UNNotificationContent) -> Void ) { self.customNotificationTask = Task { let (location, _) = try await URLSession.shared.download(from: imageUrl) let desiredLocation = URL(fileURLWithPath: "\(location.path)\(imageUrl.lastPathComponent)") try FileManager.default.moveItem(at: location, to: desiredLocation) let attachment = try UNNotificationAttachment(identifier: imageUrl.absoluteString, url: desiredLocation, options: nil) bestAttemptContent.attachments = [attachment] contentHandler(bestAttemptContent) } } } I tried using the MainActor.run {}, but it just moved the error to that run function. The UNNotificationRequest is not sendable, and I don't think I can make it so. Wrap the setupCustomNotification in a Task will move the errors to the didReceive method. It seems like the consuming keyword will help here, but it leads to a compilation error, even with the latest Xcode (16.2). Any pointers?
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525
Mar ’25
Problem receiving Remote Notification in the background after Review Rejected
I created an app. One if its functionalities is receive Remote Notification in the background, while app is monitoring Significant Location Changes (SLC). This functionality worked fine. I was receiving these notifications correctly. Sometimes instantly, sometime with small or large delay. And then I send the app for review. It was rejected with 3 remarks: The app or metadata includes information about third-party platforms that may not be relevant for App Store users, who are focused on experiences offered by the app itself (I wrote that app communication works both for iOS and Android.) The app declares support for audio in the UIBackgroundModes key in your Info.plist but we are unable to locate any features that require persistent audio. EULA (End User License Agreement) is missing for in-app purchases. After the rejection the app is no longer receiving these notifications. They are there, since the app receives them, when I open app, or significant location change is detected. It also works, when I run the app directly from Xcode (in debug mode), not from TestFlight nor in Sandbox. It seem to me like Apple somehow spoiled my background capabilities on purpose or accidentally. Is it possible? What can I do with it? Is it the case that I should just fix the review remarks and send the app back to review, and once the app passes it, it will work again? Or should I not count on it? Any suggestions? I asked Apple using: https://developer.apple.com/contact/topic/#!/topic/select but so far no response.
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179
Aug ’25
Abnormal Fluctuations in APNs API Response Success Rate (July 15-30)
Observations​​: When our app calls the APNs API for push notifications, we observed significant fluctuations: July 15-25​​: The success response volume ​​increased by 20%​​ compared to the baseline before July 15. ​​After July 25​​: Success rates returned to baseline levels. July 30​​: Success response volume ​​decreased by 10%​​ compared to the pre-July 15 baseline. ​​ Excluded Factors​​: No changes in target audience size or characteristics (business factors ruled out). Server logs confirm consistent API request parameters and frequency. ​​Key Questions​​: Were there any ​​adjustments to response metrics​​ (e.g., success status code definitions) during this period? Have other developers reported similar issues? Were there server-side configuration updates or known incidents on Apple’s end?
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248
Aug ’25
/The notifications/test request was successful, but there were no notification messages from the Apple Store
requestUrl:https://api.storekit-sandbox.itunes.apple.com/inApps/v1/notifications/test method:Post responseCode:200 testNotificationToken:06beba6c-7587-44f6-a4b8-f12b11db6061_1745832671126 Request environment: ①APP from: TestFlight ②Apple acount : Sandbox account ③Apple originalTransactionId: 2000000907966801 App Store sandbox server notification configuration is fine(https://*.com/v2/apple_refund_notify), I have tried many times, but have not received any notification from Apple. Is this API not working?
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142
Apr ’25
Inquiry About Push Notification Behavior After App Transfer
We are in the process of transferring our app to a new Apple Developer Organization account. Our app uses the Apple Push Notification service (APNs) with a .p8 authentication key configured on our server to send push notifications. We would like to confirm: Once the app transfer is completed, will push notifications continue to work temporarily using the existing .p8 key on our server, until we generate and configure a new .p8 key under the new organization's account? Understanding this behavior is critical for us to ensure a smooth transition and avoid any disruption in push notification delivery for our users. Thank you for your guidance and support.
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125
Aug ’25
CarPlay notifications unsupported for Driving Task apps in iOS 18.6
I have my app configured as a Driving Task app with the entitlement and provisioning profile correctly set up. I am also requesting the ".carPlay" notification authorization option and setting up the carplay notification category with the ".allowInCarPlay" category, both without error. When testing with the iPhone and carplay simulators the user notifications I send are appearing on the phone but not in carplay. When I check the notification settings with UNUserNotificationCenter.current().getNotificationSettings() I see that carplay is shown to be not supported ("carPlaySetting: NotSupported"). The CarPlay Developer Guide 2025-06-09 (which is the version currently referenced in the Apple docs) states that "Starting in iOS 18.4, notifications are also supported in CarPlay driving task apps". Has this discrepancy been addressed anywhere, or is this an open issue? My software versions: MacOS: Sequoia 15.6 XCode: 16.4 iPhone Simulator: iPhone 16 with iOS 18.6
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122
Aug ’25
Unknown APNs ERROR: BadEnvironmentKeyInToken when sending Push To Talk notifications
We’re sending PTT notifications from our server and are receiving HTTP 403 from APNs for certain phones with the reason field BadEnvironmentKeyInToken. I can’t find this reason documented in Apple’s public error list. I’d like to confirm what this error specifically means and how to resolve it. Any guidance or clarification would be greatly appreciated. Thank you. Here is the document I was referring to. https://developer.apple.com/library/archive/documentation/NetworkingInternet/Conceptual/RemoteNotificationsPG/CommunicatingwithAPNs.html
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442
Jan ’26
Notifications False Sucecss Delivery
We operate a social network application, SportsYou with over 3 million monthly active users and are experiencing significant issues with push notification delivery through APNs. We have a large number of users reporting they are not receiving push notifications. Our infrastructure uses AWS SNS integrated with APNs to deliver notifications. However, AWS CloudWatch consistently reports successful delivery (Success response), even though users confirm they never received the notifications. Because we receive success responses from AWS SNS, our system does not attempt to recreate or refresh the device endpoints. This leaves us unable to detect or recover from these delivery failures automatically. This issue is widespread and inconsistent. It affects users across multiple variables including different iOS versions, different device models, and different versions of our application. We cannot identify a clear pattern that would help us isolate the root cause. With millions of active users, even a small percentage of delivery failures represents thousands of users experiencing a degraded service. This is significantly impacting user engagement and satisfaction. We need guidance on how to properly diagnose this issue and ensure reliable notification delivery to our users. Specifically, we'd like to understand why we're receiving success responses when notifications aren't being delivered, and what steps we can take to detect and prevent these failures.
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146
Oct ’25
Push Notification Delivery Delays and Failures on iOS Devices
I am experiencing an issue with push notifications on my iOS application. The issue is as follows: On Android devices, push notifications are received immediately without any problems. On iOS devices, the behavior is inconsistent: When the app is in the foreground, notifications are received immediately. When the app is in the background or in recent apps with a significant delay of 5–10 hours, push notifications are not received at all. This behavior creates a major challenge for us, as timely notifications are critical for our app’s functionality. We have already verified the following points on our side: Push notification certificates and APNs setup are correct. Payload and server configurations are valid, as notifications are working fine on Android. No restrictions from the server-side, since Android users receive notifications instantly. It seems the issue is specifically related to iOS devices or APNs delivery. Could you please help us identify the cause and provide guidance on how to resolve this?
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315
Jan ’26