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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Firebase Push Notification Background Handling Fails on TestFlight iOS App
Hi, We are using Firebase to configure APNs (Apple Push Notification Service) for sending push notifications. During local testing, the push notifications are received properly when the app is in the foreground or background. After TestFlight testing and passing review, we found that when the app is installed using the developer's Apple ID, push notifications are received correctly whether the app is in the foreground or background. However, when the app is provided to other testers (using non-developer Apple IDs), notifications are only received when the app is in the foreground, and they are not triggered when the app is in the background or inactive state. Request for Assistance: Why, after TestFlight testing and passing review, does the app receive push notifications properly in the background when installed using the developer's Apple ID, but on other testers' devices, notifications are not received when the app is in the background? Are there any differences in Apple ID types or device configurations (developer ID vs. regular tester ID) that could affect the behavior of push notifications in the background mode? Do we need to apply any additional settings or permissions, particularly for handling background push notifications? Are there any iOS version or device-specific limitations that could impact the proper delivery of background push notifications? Additional Information: The app is properly configured for APNs, and push notifications are being sent via Firebase. In the developer's Apple ID test environment, the app receives push notifications properly whether it is in the foreground or background. On other testers' devices, push notifications are only received when the app is in the foreground, and they are not received when the app is in the background. All test devices have been verified to have notification permissions enabled, and Firebase configuration is correct.
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75
Apr ’25
iOS 26 stops receiving push notifications
I a using the current RC version of iOS on both my iPhone and iPad. I and developing an iCloud based app and it works correctly on iOS 18. When I upgraded to iOS 26 the iCloud functions work correctly but the push notifications do not work. The issue appears to be creating subscriptions. The following code should create a subscription and does not get an error, but it did to create a subscription under iOS 26. func subscribeToNotifications(recordType: String, subscriptionID: String, notification: CKSubscription.NotificationInfo) { let subscriptionIDForType = "\(subscriptionID)-\(recordType)" let predicate = NSPredicate(value: true) let subscription = CKQuerySubscription(recordType: recordType, predicate: predicate, subscriptionID: subscriptionIDForType, options: [.firesOnRecordCreation, .firesOnRecordUpdate, .firesOnRecordDeletion]) let notification = CKSubscription.NotificationInfo() subscription.notificationInfo = notification CKContainer.default().publicCloudDatabase.save(subscription) { (returnedSubscription, error) in if let error = error { print("Error saving subscription: \(error)") } else { print("Successfully saved subscription: recordType: " + recordType + " subscriptionID: " + subscriptionIDForType) } } } Print results: Successfully saved subscription: recordType: folder subscriptionID: folderName-folder
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229
Oct ’25
VOIP is not receiving calls
Hello, I am developing a calling service using CallKit and VOIP push. I have occasionally encountered a strange issue. The issue is that VOIP permanently fails to receive calls. I was previously informed that even if the device is blocked, it can receive calls again after 24 hours. Also, when I checked the device logic, it complied with the policy requirements set by Apple, including correctly calling CallKit's reportNewIncomingCall method. Once the issue occurs, no matter how many times I try, VOIP does not receive calls, and neither a device reboot nor checking the Device Console Log shows any logs related to CallKit or VOIP. I suspect this might be an issue with the VOIP token, and I believe that the only way to get a new one is to reinstall the app. Is that correct? Of course, after reinstalling, it works fine again, but this is very inconvenient. I don't think this is the right solution. Is there anyone who can share their insights on this issue? Thank you.
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227
Mar ’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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398
Feb ’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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111
Sep ’25
Push Notification don't wake up my app
Hi everyone, We're experiencing an issue with our Flutter app that uses PushKit, CallKit, and Janus for handling VoIP calls. Everything works fine when the app is in the foreground, but when the app is in the background or completely closed (terminated state), the behavior is inconsistent: Sometimes, incoming calls are received as expected. Other times, the app does nothing, and the call is not delivered at all. Upon checking the console logs, we noticed that our app is being canceled (terminated by the system), which seems to be the reason why calls are not coming through. This happens randomly, making it difficult to reproduce consistently. Additional Details: The app is configured to handle VoIP notifications correctly. We are using PushKit to wake up the app and trigger CallKit for the incoming call UI. When the app is active, calls are handled correctly via Janus WebRTC signaling. We have verified that background modes for VoIP are enabled in the Info.plist. We suspect that iOS may be aggressively killing the app in the background, preventing incoming call notifications from reaching it. Questions: Has anyone experienced similar behavior with PushKit + CallKit on recent iOS versions? Could iOS be terminating the app due to background execution policies? Are there recommended best practices to ensure reliable delivery of VoIP notifications when the app is closed? Any insights or suggestions would be greatly appreciated! Thanks! Addional Information: this is the cancellation information at console: Received incoming message on topic hiperme.app at priority 10 por omisión 17:10:18.462084-0300 dasd CANCELED: com.apple.pushLaunch.hiperme.app:E8BACD at priority 10
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151
Mar ’25
How to connect to Apple’s legacy server-to-server subscription endpoints (StoreKit v1) to receive real-time notifications
Our mobile app uses a specific platform for subscription management. At this time,, it's integration with Apple notifications is built around the Server-to-Server Notifications v1 and the traditional verifyReceipt endpoint. At this time, it does not support Server-to-Server Notifications v2, nor has any published documentation or resources on a custom integration path using v2. Our app is built using Flutter and we handle purchases with the in_app_purchase plugin. However, due to the limitation on the system for subscription side, we need to connect to Apple’s legacy server-to-server subscription endpoints (StoreKit v1) to receive real-time notifications and validate receipts. Could you please provide information how to do it?
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May ’25
Why iOS App Upgrades Fail to Apply Background Mode Settings
We have a question regarding iOS app configuration and the Remote notifications background mode. During our testing, we observed: *When enabling or disabling Signing & Capabilities > Background Modes > Remote notifications, the change does not take effect on devices that already have the app installed. *The app continues to behave according to the old configuration. *Only after uninstalling the app and reinstalling it from the App Store do the new settings take effect (for example, whether the app can be woken up by silent push). *We also tested updating the app with a new version number (App Store upgrade flow), but the new settings still did not apply. Our questions are: 1.Is there any way to make iOS re-read the updated Signing & Capabilities (Background Modes) settings without requiring a full uninstall/reinstall? 2.Is it expected behavior that even an App Store upgrade with a new version number will not apply these changes? thanks!
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Sep ’25
iOS Blocking Websocket Reconnection After Multiple VoIP Push Notifications
Hello, We have a Push-to-Talk (PTT) application that is already well established and widely used. Our app has the proper VoIP entitlement, which we are using to wake up the app and establish a WebSocket connection for real-time communication. We are also using CallKit as a supporting mechanism, but not as the primary interaction upon receiving the VoIP Push, since our use case differs from traditional full-duplex VoIP calls. While our implementation works correctly in many cases, we have noticed a consistent issue where, after multiple VoIP Push notifications, the system still delivers the push, but prevents the WebSocket from reconnecting. At this point, all connection attempts return errors such as: • "Software caused connection abort" This issue persists until the app is manually relaunched, after which the behavior resets and repeats. We are aware that VoIP Push was originally designed for full-duplex calls, but since Apple allows its use for other purposes through the entitlement, we would like to understand why this limitation is occurring and how to handle it properly. Questions: 1. Is iOS enforcing stricter background execution rules after multiple VoIP Push events within a short period? 2. Are there any recommended best practices to ensure reliable WebSocket reconnection in this scenario?
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Feb ’25
iOS应用图标右上角的未读数无法清除
手机型号:iPhone 13 Pro iOS版本号:iOS 18.6.2 (22G100) 用户开启了应用的系统通知功能,在收到离线推送后应用右上角展示未读消息数。在APP启动或者从后台恢复的时候,应用会用如下方法清理应用桌面图标的未读数角标。但是在部分机型上,应用转为“后台模式”时仍然会出现一个未读角标,且每次都是一个固定值;如果直接kill进程就不会出现未读角标。请问如何能够【完全】清理消息未读数,确保不会在退后台的时候再次出现呢? [[UIApplication sharedApplication] setApplicationIconBadgeNumber:0]; [[UIApplication sharedApplication] cancelAllLocalNotifications]; if (@available(iOS 16.0, *)) { [[UNUserNotificationCenter currentNotificationCenter] setBadgeCount:0 withCompletionHandler:nil]; [[UNUserNotificationCenter currentNotificationCenter] removeAllPendingNotificationRequests]; [[UNUserNotificationCenter currentNotificationCenter] removeAllPendingNotificationRequests]; } UNMutableNotificationContent *content = [[UNMutableNotificationContent alloc] init]; content.badge = @(-1); UNNotificationRequest *request = [UNNotificationRequest requestWithIdentifier:@"clearBadge" content:content trigger:nil]; [[UNUserNotificationCenter currentNotificationCenter] addNotificationRequest:request withCompletionHandler:^(NSError * _Nullable error) { // Do nothing }];
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109
Jan ’26
How to turn off shortcuts notifications permanently apart from turning it off via screen time as it keeps turning itself back ON.
I have created a configuration profile which basically just turns off notifications for Shortcuts app but I am unable to install it on my iPhone as I am getting the following error “This profile can be installed on a supervised device only” can someone please help me with this? Would also appreciate if you have another way to turn off shortcuts notifications permanently since when I turn it off via screen time it keeps turning itself ON every couple of days.
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301
Feb ’25
SwiftUI: UNUserNotificationCenter delegate not called on cold start when opening notification
I'm sending local push notifications and want to show specific content based on the id of any notification the user opens. I'm able to do this with no issues when the app is already running in the background using the code below. final class AppDelegate: NSObject, UIApplicationDelegate, UNUserNotificationCenterDelegate { let container = AppContainer() func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]? = nil) -> Bool { let center = UNUserNotificationCenter.current() center.delegate = self return true } func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: () -> Void) { container.notifications.handleResponse(response) completionHandler() } } However, the delegate never fires if the app was terminated before the user taps the notification. I'm looking for a way to fix this without switching my app lifecycle to UIKit. This is a SwiftUI lifecycle app using UIApplicationDelegateAdaptor. @main struct MyApp: App { @UIApplicationDelegateAdaptor(AppDelegate.self) var appDelegate var body: some Scene { WindowGroup { ContentView() } } } I’m aware notification responses may be delivered via launchOptions on cold start, but I’m unsure how to bridge that cleanly into a SwiftUI lifecycle app without reverting to UIKit.
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2w
Reliability and latency for Appsore server side notifications v2
Hi Team, We are building oru subscrption app and want to rely on server side purchase / subscription related notifications. We went through https://developer.apple.com/documentation/appstoreservernotifications/enabling-app-store-server-notifications We wanted to understand the reliability and latency for server side notifciations provided by Appstore.
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65
Nov ’25
How do I manually associate an iOS app counterpart to my macOS app to deduplicate Notifications from iPhone?
Howdy, I'm trying to figure out how to replicate the following behavior for our app: The system is able to ascertain that the Mac equivalent of some iOS app is installed locally, and it prevents notifications from being mirrored. However, I am unable to determine how this association is inferred. When I check our iOS app under this prefpane, the switch remains enabled and toggleable—we'd like to act like Slack here. My initial assumption is that an app group containing both the Mac and iOS apps can be used to create the association; however, I would like to confirm that this is indeed the case before doing so. I'm not terribly confident about this. Details: The bundle identifiers of both apps do not match. This also applies to Slack; its iOS app is com.tinyspeck.chatlyio while its Mac app is com.tinyspeck.slackmacgap. In our case, the iOS app's identifier is like com.company.app while the Mac app's identifier is com.company.app.desktop. Both apps are signed with certificates that have matching team identifiers. The com.apple.developer.team-identifier entitlement is present on the Mac app. The Mac app shares a keychain access group with the iOS app. The Mac app is not sandboxed. The Mac app is an Electron app. The Mac app does not use APNs. It sends notifications "locally". I currently only have the iOS app installed on my iPhone via TestFlight, if that matters. Notification mirroring does work, but we'd like to forcibly disable this by associating the apps together. To my knowledge, the iOS app makes use of both a UNNotificationServiceExtension and a UNNotificationContentExtension. The iOS app currently doesn't have an assigned category (at least in Xcode). The Mac app is currently miscategorized as a developer tool (LSApplicationCategoryType = "public.app-category.developer-tools";), but that should be fixed. (Redacted) bundle information for the Mac app: CFBundleDisplayName = App; CFBundleExecutable = "App Desktop"; CFBundleName = App; Note that our CFBundleExecutable differs from the bundle's display name/name because we're currently migrating our users to a new version of the app that they'd likely want to live alongside the new one. The filename of the bundle itself is, similarly, App Desktop.app. For the iOS app, to my knowledge, the CFBundleName and CFBundleDisplayName are App.
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Mar ’25
Is there a way to dynamically configure Actionable Notifications?
Hello, We are trying to implement Actionable Notifications on iOS via Remote Notifications. According to Apple’s official documentation (Declaring Your Actionable Notification Types), it is recommended to register notification categories at launch time. However, in our use case, the number of buttons and their actions in the Actionable Notification are determined at the time of the Remote Notification request. This means that we cannot predefine the categories at app launch but need to dynamically configure them based on the payload of the Remote Notification. Our Approach We are considering setting aps.mutable-content = 1 and using Notification Service Extension to modify the categoryIdentifier dynamically. Below is the JSON payload we plan to use for Remote Notifications: { "aps": { "alert": { "title": "New Message Received!", "body": "Check out the details." }, "category": "DYNAMIC_CATEGORY", "mutable-content": 1 }, "categoryData": { "id": "DYNAMIC_CATEGORY", "actions": [ { "id": "REPLY_ACTION", "title": "Reply", "options": ["foreground"] }, { "id": "DELETE_ACTION", "title": "Delete", "options": ["destructive"] } ] } } Questions: Can we dynamically configure Actionable Notifications based on the Remote Notification payload? If we set categoryIdentifier in Notification Service Extension’s didReceive(_:withContentHandler:), will users still see the correct action buttons even if the app is terminated? What is the recommended approach to dynamically configure Actionable Notifications at the time of receiving the Remote Notification, rather than at app launch?
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86
Mar ’25
Live Activity don't show properly in Apple Watch
I'm facing an issue with Live Activity on the Apple Watch. I followed all the configurations outlined in Apple's official documentation, but during testing, I noticed inconsistent behavior. Some devices can display the Live Activity on the Apple Watch without any issues, while others can only see it on the iPhone, even though they are running the same system version. I've already checked the permissions, and everything is set up correctly, but I still haven't found what might be causing this difference. Has anyone experienced something similar or has any debugging suggestions?
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269
Feb ’25
New features for APNs token authentication now available
Team-scoped keys introduce the ability to restrict your token authentication keys to either development or production environments. Topic-specific keys in addition to environment isolation allow you to associate each key with a specific Bundle ID streamlining key management. For detailed instructions on accessing these features, read our updated documentation on establishing a token-based connection to APNs.
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1.8k
Feb ’25