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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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
Need Clarification on Using Location Push Service Extension for Firefighter Check-In/Check-Out
I’m building a firefighter app that needs to automatically check in a firefighter when they arrive at the station and check them out when they leave — even if the app is killed. We need reliable enter/exit detection, low latency, and only one fixed location per user. We’re evaluating Region Monitoring, which works in the killed state but may introduce delays and inconsistent accuracy. To ensure mission-critical reliability, we are considering the Location Push Service Extension, since it can fetch precise location on demand and wake the extension even when the app is terminated. Before requesting the restricted entitlement, we need clarification on Apple’s expectations: Is Region Monitoring recommended for this fixed-location use case? Would Apple consider approving the Location Push Service Extension for a public-safety workflow? What prerequisites do we need before submitting the entitlement request (Always permission, prototype, privacy disclosures, etc.)? What details should be included in the justification form? Our goal is to follow the most reliable and Apple-approved approach for firefighter check-in/out. Any guidance would be greatly appreciated.
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118
Nov ’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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145
Jul ’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
No "Unregistered" Error Returned for Background Notifications
Hi team, We've observed that for all background notifications (where content-available set to true, https://developer.apple.com/documentation/usernotifications/pushing-background-updates-to-your-app#Create-a-background-notification), we never received any response with error string "Unregistered". This differs from non-background pushes, where expired tokens are regularly cleared. Is this the expected behavior (i.e., background notifications will not return an "Unregistered" error), or could this indicate an issue on our side? Thanks in advance for any clarification.
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209
Jul ’25
Clarification on Timing for Critical Alerts Approval in iOS
We are currently planning the development of an iOS healthcare application that will require the use of Critical Alerts. I understand that these notifications bypass Do Not Disturb and Silent mode, and therefore require special entitlement from Apple. We understand that Critical Alerts require a special entitlement from Apple. Could you please clarify: Do we need to request and obtain Apple’s approval for Critical Alerts before we begin development of the app? Or can we apply for this entitlement after we have a working build or prototype ready? We want to ensure compliance and streamline our development process, so any guidance on the appropriate timing for the entitlement request would be greatly appreciated.
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97
Jul ’25
How can notification action buttons' text be center aligned?
The iOS documentation shows notification actions buttons with the text center aligned: https://developer.apple.com/documentation/usernotifications/declaring-your-actionable-notification-types But there's no apparent way for an app to control this. The buttons are controlled and rendered by the system and the text is always left aligned. Is there some way to get the text center aligned?
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86
Aug ’25
Push Notifications and VOIP call not working.
My App supports two services that is Push Notification for Alerts and a Voip Call feature whose notification also comes in the same way as of PushNotification but video rendering is done with GoogleWebRTC. The App was working perfectly fine but from past few months these services are not working.[ Nothing is changed in App and on the server side to push the notifications] Issues: VoIP (Video call) not working: I have apns certificate which is valid in today's date and stays with the backend Server. My server sends the payload notification to APNS but on iPhone am unable to receive it. I have checked the App registration part also and is able to receive the token for the same. Framework used are: PushKit, UserNotifications, GoogleWebRTC . I don't understand where is the gap, the backend triggers the APNS but there no response. Ports enabled on server are: 443, 5223, 2197, 2195, 2196. Similarly Push notification were also not working, So I tried to change it to register on Firebase for device registration token And did some coding at backend to send the notification to that device. It was working perfectly fine from last few weeks, but it suddenly stopped. I checked the JSON Payload and tried to send it through PostMan, in both it says 200 Success. And in Application end am waiting for breakpoint to hit in userNotificationCenter(_: , willPresent, completionHandler). What all I have checked: 1)My server to APNS server connectivity. 2)Verified the apns certificate. The certificate was created in October 2024, whose expiry is in Nov 2025 and it support both Sandbox and Production environment. 3)Checked required delegates are implemented in App. With the capability enable in it, is also sending registration token to backend. Kindly guide me where I can check in this flow. Thanks in Advance!
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107
Jul ’25
Questions about using the "UserNotification framework"
In macOS, how can I use UnmutableNotificationContent notifications to prevent the main window from activating when clicking the notification? code: import Cocoa import UserNotifications // Mandatory import for notification functionality class ViewController: NSViewController { override func viewDidLoad() { super.viewDidLoad() // Automatically request permissions and send a test notification when the view loads sendLocalNotification() } /// Core method to send a local notification func sendLocalNotification() { let notificationCenter = UNUserNotificationCenter.current() // 1. Request notification permissions (Mandatory step; user approval required) notificationCenter.requestAuthorization(options: [.alert, .sound, .badge]) { [weak self] isGranted, error in guard let self = self else { return } // Handle permission request errors if let error = error { print("Permission request failed: \(error.localizedDescription)") return } // Exit if user denies permission if !isGranted { print("User denied notification permissions; cannot send notifications") return } // 2. Construct notification content using UNMutableNotificationContent let notificationContent = UNMutableNotificationContent() notificationContent.title = "Swift Notification Test" // Notification title notificationContent.subtitle = "macOS Local Notification" // Optional subtitle notificationContent.body = "This is a notification created with UNMutableNotificationContent" // Main content notificationContent.sound = .default // Optional notification sound (set to nil for no sound) notificationContent.badge = 1 // Optional app icon badge (set to nil for no badge) // 3. Set trigger condition (here: "trigger after 3 seconds"; can also use time/calendar triggers) let notificationTrigger = UNTimeIntervalNotificationTrigger( timeInterval: 3, // Delay in seconds repeats: false // Whether to repeat (false = one-time only) ) // 4. Create a notification request (requires a unique ID for later cancellation if needed) let notificationRequest = UNNotificationRequest( identifier: "SwiftMacNotification_001", // Unique identifier content: notificationContent, trigger: notificationTrigger ) // 5. Add the request to the notification center and wait for triggering notificationCenter.add(notificationRequest) { error in if let error = error { print("Notification delivery failed: \(error.localizedDescription)") } else { print("Notification added to queue; will trigger in 3 seconds") } } } } }
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130
Dec ’25
Audio Session in Notification Service Extension
Is there anyway that I could use AVAudioSession, AVAudioPlayer or anything similar in Notification Service Extension? I am trying to implement Audio Playback in the Notification Service Extension to play specific audio file when receiving Notification regardless the app state(foreground, background or killed), but I am not able to activate audio session in Notification Service Extension. NSError *sessionError = nil; BOOL success = [[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback error:&sessionError]; success = [[AVAudioSession sharedInstance] setActive:YES error:&sessionError]; if (!success) { NSLog(@"Error activating audio session: %@", sessionError); } Below is the error that I got when I am trying to run the code above in Notification Service Extension. Error Domain=NSOSStatusErrorDomain Code=561015905 "Session activation failed" UserInfo={NSLocalizedDescription=Session activation failed}
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151
May ’25
Alarm.Schedule.Relative gets scheduled to next day if too close?
Hi there, Thank you for the framework 🙏 if I use Alarm.Schedule.Relative with Alarm.Schedule.Relative.Time(hour: hour, minute: minute) and Alarm.Schedule.Relative.Recurrence.never it seems like there is some (odd?) limit where alarm will get scheduled to next day if too close? For example, lets say the current time is 12:00 PM, if I schedule alarm for 12:02 PM, it will schedule it for next day, while if I do 12:05 PM it will work as expected. Is that expected? If yes, what's the behavior and is that documented anywhere? I would expect any alarm thats scheduled in the future to fire for the current day (maybe if it's only 1 minute it gets tricky). One problem is also that even if the framework says an alarm is scheduled, I don't have access to the "next alarm date"? I wish I did as otherwise I have to compute it (by "guessing" the AlarmKit calculation) if I want to do anything with that date. Honestly, sometimes I think I am just going crazy when the alarm doesn't fire, but there SEEMS to be some odd behavior around this? (of course, feel free to correct me on anything - I could be missing documentation or not understanding something)
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171
Aug ’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
RESCIND_CONSENT notification not delivered in Sandbox environment
I am currently testing the Declared Age Range / Parental Consent flow in the Sandbox environment, and I am experiencing an issue where the RESCIND_CONSENT App Store Server Notification is not being delivered to my server. 🔍 Test Environment iOS version: iOS 26.2 (Sandbox environment) App Store Server Notifications: Sandbox environment 🔄 Test Scenario App Settings > Developer > Sign in with a Sandbox account Launch the app In App Settings > Developer > Sandbox Account > Management > Revoke App Consent, enter the app’s Bundle ID, tap the Revoke Consent button, and confirm that the revocation completion popup message is displayed Check whether App Store Server Notifications are received by the server Confirm that the RESCIND_CONSENT notification is not received by the server ✅ Expected Result The App Store Server sends a RESCIND_CONSENT notification to the Sandbox endpoint The notification payload includes appTransactionId The server can block app access based on the corresponding appTransactionId ❌ Actual Result No RESCIND_CONSENT notification is received in the Sandbox environment ❓ Questions Is this behavior an intended limitation of the Sandbox environment, or is it a known issue or bug? Is it possible that RESCIND_CONSENT notifications will only be delivered starting January 1, 2026? Additionally, when a RESCIND_CONSENT server notification is received, I currently update my database with the appTransactionId and the registration date. When a minor attempts to access the app, I check the latest appTransactionId status, and if the most recent state indicates consent has been revoked, I block app access and prompt the user to request parental consent again using PermissionKit.
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159
Dec ’25
Notifications not working
I’m receiving notifications from all third-party apps that I use however, most of the time there is no sound or haptics with the notification. In some cases, very seldomly I will receive a sound when a notification comes in, but that’s only with one of the many third-party apps that I use. I’ve spoken to Apple about this when this whole problem started during an update that you guys rolled out sometime between September and November 2024. They blamed it on the app programmers but I think at this point we all know that it’s Apple’s inability to accept that the problem is on their end. I never had problems receiving notifications from any of the apps prior to that. I guess my question is will Apple ever fix this or are they going to sweep it under the rug and pretend like it doesn’t exist?
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249
Jul ’25
Game Center and Push Notifications
I have used the Push Notifications Console and verify that the test notification reaches my device (it says "not necessarily the app"). However, GameCenter notifications are not reaching the app. When one device passes the turn, the turn is successfully passed as seen in the Matchmaker VC. However, the app does not get the turn pass notification whether or not it is running. No banner appears if the app is not running (but it does when using the Push Notifications Console). Please advise.
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142
Jan ’26
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