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

Posts under Notifications subtopic

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Backgrounded app - Local Notifications
I'm working on an app that syncs with Apple Health events. Every time an event occurs, the app should send a notification. The problem occurs when the app is backgrounded or force-closed; it can no longer send local notifications, and because these events can occur at any time, scheduled notifications can't be used. I'm just wondering if anyone's found a creative way around this. I know we can't override system behaviour, I'm just thinking of other alternative solutions for the matter.
1
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199
Mar ’26
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!
1
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110
Jul ’25
Push Notifications Failing - Xcode shows "Untitled" Certificates & "No App ID" for Push Console after Org Account Migration
Hi everyone, I recently migrated my individual Apple Developer account to an Organization account for my company "". My Team ID remained the same. I'm now facing persistent issues with code signing and push notifications for my iOS app (Bundle ID: com.).
 Current Problems:
 "Untitled" Certificates in Xcode: When I go to Xcode -> Settings -> Accounts -> [My Apple ID] -> Select "" Team -> "Manage Certificates...", a number of my newly created Apple Development and Apple Distribution certificates are listed древ "Untitled". Some older ones are "Revoked". (See attached screenshot if possible).
 "No App ID" for Push Notifications Console: In my app target's "Signing & Capabilities" tab, I've added the "Push Notifications" capability. However, when I click the info button to open the "Push Notifications Console", it states: "no app IDs: Register an App ID with the Push Notifications capability enabled to use the Push Notifications console." This is despite the fact that the Push Notifications capability IS enabled for my App ID com. in the Developer Portal, and I've configured an APNs Auth Key (.p8) for it.
 Push Notifications Not Received (from Backend): While I can successfully send a test push notification directly from the Firebase Console to my device's FCM token, notifications triggered by my backend (Firebase Cloud Functions writing to a Firestore collection, which then triggers another function to send via FCM) are not being delivered to iOS devices. (Android seems to be working more reliably now).
 Setup: Using an APNs Authentication Key (.p8) linked to my Organization Team ID in Firebase Cloud Messaging. Main App ID com. has "Push Notifications" capability enabled. Notification Service Extension com..ImageNotification also has its App ID and Provisioning Profile set up for the Organization team. Created new Development and Distribution certificates and Provisioning Profiles specifically for the Organization team. Using "Automatically manage signing" in Xcode with the Organization team selected for both the main app target and the extension target.
 Troubleshooting Done: Revoked old/problematic certificates and profiles. Recreated CSRs and new Development/Distribution certificates under the Organization team multiple times. Recreated Provisioning Profiles. Cleaned Derived Data in Xcode. Ensured Bundle Identifiers are consistent. Verified APNs Auth Key details (Key ID, Team ID) in Firebase.
 I suspect there's a fundamental issue with how Xcode is recognizing or linking the signing assets for my Organization team after the account type change, despite the Team ID being the same. The "Untitled" certificates are a major red flag.
 Has anyone encountered similar issues, particularly the "Untitled" certificates or the "No App ID" message for the Push Console, after an account migration or when working with Organization accounts? Any insights on how to resolve this would be greatly appreciated.
 Thanks,
Benni
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168
May ’25
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.
1
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217
Jul ’25
Crash in Swift 6 when using UNUserNotification
After porting code to Swift 6 (Xcode 16.4), I get a consistent crash (on simulator) when using UNUserNotificationServiceConnection It seems (searching on the web) that others have met the same issue. Is it a known Swift6 bug ? Or am I misusing UNUserNotification ? I do not have the crash when compiling on Xcode 26 ß5, which hints at an issue in Xcode 16.4. Crash log: Thread 10 Queue : com.apple.usernotifications.UNUserNotificationServiceConnection.call-out (serial) As far as I can tell, it seems error is when calling nonisolated func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) I had to declare non isolated to solve a compiler error. Main actor-isolated instance method 'userNotificationCenter(_:didReceive:withCompletionHandler:)' cannot be used to satisfy nonisolated requirement from protocol 'UNUserNotificationCenterDelegate' I was advised to: Add 'nonisolated' to 'userNotificationCenter(_:didReceive:withCompletionHandler:)' to make this instance method not isolated to the actor I filed a bug report: Aug 10, 2025 at 2:43 PM – FB19519575
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317
Sep ’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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138
Dec ’25
Push Notification Sound and Notification Service Extension When App is Killed
Dear Apple Developer Support, I am currently developing an iOS application that uses push notifications with custom .caf audio and a Notification Service Extension. I have implemented the extension to download and play a dynamic sound file from a remote sound_url. It works well when the app is in the foreground or background. However, when the app is force-closed (swiped up from multitasking), the Notification Service Extension does not seem to run. As a result, the custom sound is not downloaded or played. I would like to confirm: Is it possible to trigger the Notification Service Extension when the app is killed? If not, what is the correct way to play a custom .caf sound when the app is terminated? Should I preload and save the .caf file in App Group storage and reference it by name in the sound field? Are there any best practices or limitations regarding push notification customization when the app is killed? I appreciate your help in clarifying this issue. Thank you very much! Best regards, Phan Van Tung
1
0
149
Apr ’25
Unable to connect to APNS sandbox endpoint
I am unable to connect to APNs sandbox push endpoint from our backend servers. It works fine when hitting the request from my local machine but it fails from the infra servers. Here are the complete curl details. Endpoint: https://api.sandbox.push.apple.com:443 CURL request and response: curl -v https://api.sandbox.push.apple.com:443 Trying 17.188.168.149:443... Connected to api.sandbox.push.apple.com (17.188.168.149) port 443 ALPN: curl offers h2,http/1.1 Cipher selection: ALL:!EXPORT:!EXPORT40:!EXPORT56:!aNULL:!LOW:!RC4:@STRENGTH TLSv1.2 (OUT), TLS handshake, Client hello (1): CAfile: /etc/pki/tls/certs/ca-bundle.crt CApath: none OpenSSL SSL_connect: SSL_ERROR_SYSCALL in connection to api.sandbox.push.apple.com:443 Closing connection curl: (35) OpenSSL SSL_connect: SSL_ERROR_SYSCALL in connection to api.sandbox.push.apple.com:443 There are no issues with Production endpoint. Can someone help? Verified all certificates. Everything worked fine until 29th July but started failing since 30th July Here is the PCAP file. Additionally, Here is the outbound public IP : 3.251.214.255 apple_push_sandbox_pcap.txt
2
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121
Sep ’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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89
Sep ’25
Limit on consecutive push notifications (normal and critical alerts)
Hi, We have a use case where our app needs to send repeated push notifications (both normal and critical alerts) to inform the user about a critical device state and grab their attention. Since iOS doesn’t allow us to schedule local notifications beyond 30 seconds, I need to send multiple pushes from the server side. My questions are: Is there any documented limit on how many push notifications can be sent back-to-back before Apple starts throttling or restricting them? Are critical alerts treated differently from normal notifications in terms of delivery restrictions or frequency limits? Is there a recommended approach for handling scenarios where repeated urgent notifications are necessary to keep the user informed? I want to make sure I’m following Apple’s guidelines and not risking rejection during review.
1
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121
Sep ’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}
1
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172
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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182
Oct ’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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258
Oct ’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.
2
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128
Oct ’25
Can I enable push notifications in an iOS app built from a web app URL using PWA Builder?
Hi all, I have a React web app that we use as a Progressive Web App (PWA). We currently: Use PWA Builder to package it for Android and iOS Host the app on a secure HTTPS URL Use Firebase Cloud Messaging (FCM) for push notifications (working on Android) However, on iOS, we are unable to get push notifications to work. I understand that PWAs on iOS have limited push support (Safari only, and not through WebView). So I explored using Capacitor, but: Capacitor can load a server.url pointing to our hosted app (great for reuse), but push notifications don’t work If we build the web app locally (npm run build) and embed it in the native iOS shell via Capacitor, push works We would prefer not to fully merge our authentication and main app UIs if avoidable Questions: Is there any approved way to enable push notifications in an iOS .ipa built from a hosted web app (URL) using PWA Builder? If not, is embedding the web assets locally the only Apple-approved way to get push support? Are there any best practices or native plugin recommendations (e.g., APNs or FCM) for handling push notifications in iOS app? Thanks in advance for any guidance. 🙏 Let me know if more technical details would help.
1
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137
Jun ’25
Backgrounded app - Local Notifications
I'm working on an app that syncs with Apple Health events. Every time an event occurs, the app should send a notification. The problem occurs when the app is backgrounded or force-closed; it can no longer send local notifications, and because these events can occur at any time, scheduled notifications can't be used. I'm just wondering if anyone's found a creative way around this. I know we can't override system behaviour, I'm just thinking of other alternative solutions for the matter.
Replies
1
Boosts
0
Views
199
Activity
Mar ’26
supported displaying a red dot on notifications with no indication number
I wanted to know if Apple ever supported displaying a red dot on notificationswith no indication number.
Replies
0
Boosts
0
Views
52
Activity
May ’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!
Replies
1
Boosts
0
Views
110
Activity
Jul ’25
Can I direct enter my app without notification interaction by NFC background scanning
Hi, there is a issue that iOS background NFC scanning will only provide a notification result, It need user click to enter my APP, can I have any method to enter my APP directly without user action ?
Replies
1
Boosts
0
Views
114
Activity
Jul ’25
Push Notifications Failing - Xcode shows "Untitled" Certificates & "No App ID" for Push Console after Org Account Migration
Hi everyone, I recently migrated my individual Apple Developer account to an Organization account for my company "". My Team ID remained the same. I'm now facing persistent issues with code signing and push notifications for my iOS app (Bundle ID: com.).
 Current Problems:
 "Untitled" Certificates in Xcode: When I go to Xcode -> Settings -> Accounts -> [My Apple ID] -> Select "" Team -> "Manage Certificates...", a number of my newly created Apple Development and Apple Distribution certificates are listed древ "Untitled". Some older ones are "Revoked". (See attached screenshot if possible).
 "No App ID" for Push Notifications Console: In my app target's "Signing & Capabilities" tab, I've added the "Push Notifications" capability. However, when I click the info button to open the "Push Notifications Console", it states: "no app IDs: Register an App ID with the Push Notifications capability enabled to use the Push Notifications console." This is despite the fact that the Push Notifications capability IS enabled for my App ID com. in the Developer Portal, and I've configured an APNs Auth Key (.p8) for it.
 Push Notifications Not Received (from Backend): While I can successfully send a test push notification directly from the Firebase Console to my device's FCM token, notifications triggered by my backend (Firebase Cloud Functions writing to a Firestore collection, which then triggers another function to send via FCM) are not being delivered to iOS devices. (Android seems to be working more reliably now).
 Setup: Using an APNs Authentication Key (.p8) linked to my Organization Team ID in Firebase Cloud Messaging. Main App ID com. has "Push Notifications" capability enabled. Notification Service Extension com..ImageNotification also has its App ID and Provisioning Profile set up for the Organization team. Created new Development and Distribution certificates and Provisioning Profiles specifically for the Organization team. Using "Automatically manage signing" in Xcode with the Organization team selected for both the main app target and the extension target.
 Troubleshooting Done: Revoked old/problematic certificates and profiles. Recreated CSRs and new Development/Distribution certificates under the Organization team multiple times. Recreated Provisioning Profiles. Cleaned Derived Data in Xcode. Ensured Bundle Identifiers are consistent. Verified APNs Auth Key details (Key ID, Team ID) in Firebase.
 I suspect there's a fundamental issue with how Xcode is recognizing or linking the signing assets for my Organization team after the account type change, despite the Team ID being the same. The "Untitled" certificates are a major red flag.
 Has anyone encountered similar issues, particularly the "Untitled" certificates or the "No App ID" message for the Push Console, after an account migration or when working with Organization accounts? Any insights on how to resolve this would be greatly appreciated.
 Thanks,
Benni
Replies
0
Boosts
0
Views
168
Activity
May ’25
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.
Replies
1
Boosts
0
Views
217
Activity
Jul ’25
Crash in Swift 6 when using UNUserNotification
After porting code to Swift 6 (Xcode 16.4), I get a consistent crash (on simulator) when using UNUserNotificationServiceConnection It seems (searching on the web) that others have met the same issue. Is it a known Swift6 bug ? Or am I misusing UNUserNotification ? I do not have the crash when compiling on Xcode 26 ß5, which hints at an issue in Xcode 16.4. Crash log: Thread 10 Queue : com.apple.usernotifications.UNUserNotificationServiceConnection.call-out (serial) As far as I can tell, it seems error is when calling nonisolated func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) I had to declare non isolated to solve a compiler error. Main actor-isolated instance method 'userNotificationCenter(_:didReceive:withCompletionHandler:)' cannot be used to satisfy nonisolated requirement from protocol 'UNUserNotificationCenterDelegate' I was advised to: Add 'nonisolated' to 'userNotificationCenter(_:didReceive:withCompletionHandler:)' to make this instance method not isolated to the actor I filed a bug report: Aug 10, 2025 at 2:43 PM – FB19519575
Replies
5
Boosts
0
Views
317
Activity
Sep ’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") } } } } }
Replies
0
Boosts
0
Views
138
Activity
Dec ’25
Push Notification Sound and Notification Service Extension When App is Killed
Dear Apple Developer Support, I am currently developing an iOS application that uses push notifications with custom .caf audio and a Notification Service Extension. I have implemented the extension to download and play a dynamic sound file from a remote sound_url. It works well when the app is in the foreground or background. However, when the app is force-closed (swiped up from multitasking), the Notification Service Extension does not seem to run. As a result, the custom sound is not downloaded or played. I would like to confirm: Is it possible to trigger the Notification Service Extension when the app is killed? If not, what is the correct way to play a custom .caf sound when the app is terminated? Should I preload and save the .caf file in App Group storage and reference it by name in the sound field? Are there any best practices or limitations regarding push notification customization when the app is killed? I appreciate your help in clarifying this issue. Thank you very much! Best regards, Phan Van Tung
Replies
1
Boosts
0
Views
149
Activity
Apr ’25
Unable to connect to APNS sandbox endpoint
I am unable to connect to APNs sandbox push endpoint from our backend servers. It works fine when hitting the request from my local machine but it fails from the infra servers. Here are the complete curl details. Endpoint: https://api.sandbox.push.apple.com:443 CURL request and response: curl -v https://api.sandbox.push.apple.com:443 Trying 17.188.168.149:443... Connected to api.sandbox.push.apple.com (17.188.168.149) port 443 ALPN: curl offers h2,http/1.1 Cipher selection: ALL:!EXPORT:!EXPORT40:!EXPORT56:!aNULL:!LOW:!RC4:@STRENGTH TLSv1.2 (OUT), TLS handshake, Client hello (1): CAfile: /etc/pki/tls/certs/ca-bundle.crt CApath: none OpenSSL SSL_connect: SSL_ERROR_SYSCALL in connection to api.sandbox.push.apple.com:443 Closing connection curl: (35) OpenSSL SSL_connect: SSL_ERROR_SYSCALL in connection to api.sandbox.push.apple.com:443 There are no issues with Production endpoint. Can someone help? Verified all certificates. Everything worked fine until 29th July but started failing since 30th July Here is the PCAP file. Additionally, Here is the outbound public IP : 3.251.214.255 apple_push_sandbox_pcap.txt
Replies
2
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0
Views
121
Activity
Sep ’25
macOS 26 Tahoe - Battery warning
In the new update of macOS 26 Tahoe, I have noticed that on my MacBook Air M3, I am not getting a warning when my battery is low or when it's about to go to sleep. My MacBook is just turning off without warning.
Replies
1
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0
Views
172
Activity
Jun ’25
How to solve any errors during the P12 certificate sending test?
When performing the P12 certificate sending test, there was an error stating that authentication failed due to the remote party closing the transport stream. May I ask how to solve this?
Replies
1
Boosts
0
Views
102
Activity
Apr ’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!
Replies
0
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0
Views
89
Activity
Sep ’25
Notifications. Where can I set which type of notifications I want to receive
I dont want my server to be spammed. Currently I am only in payment-related notifs (eg: user successfully renewed his subscription, user didnt successfully renew his subscriptions, ..) Where can I set that?
Replies
1
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0
Views
49
Activity
Jul ’25
Limit on consecutive push notifications (normal and critical alerts)
Hi, We have a use case where our app needs to send repeated push notifications (both normal and critical alerts) to inform the user about a critical device state and grab their attention. Since iOS doesn’t allow us to schedule local notifications beyond 30 seconds, I need to send multiple pushes from the server side. My questions are: Is there any documented limit on how many push notifications can be sent back-to-back before Apple starts throttling or restricting them? Are critical alerts treated differently from normal notifications in terms of delivery restrictions or frequency limits? Is there a recommended approach for handling scenarios where repeated urgent notifications are necessary to keep the user informed? I want to make sure I’m following Apple’s guidelines and not risking rejection during review.
Replies
1
Boosts
0
Views
121
Activity
Sep ’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}
Replies
1
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0
Views
172
Activity
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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1
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0
Views
182
Activity
Oct ’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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0
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0
Views
258
Activity
Oct ’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.
Replies
2
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0
Views
128
Activity
Oct ’25
Can I enable push notifications in an iOS app built from a web app URL using PWA Builder?
Hi all, I have a React web app that we use as a Progressive Web App (PWA). We currently: Use PWA Builder to package it for Android and iOS Host the app on a secure HTTPS URL Use Firebase Cloud Messaging (FCM) for push notifications (working on Android) However, on iOS, we are unable to get push notifications to work. I understand that PWAs on iOS have limited push support (Safari only, and not through WebView). So I explored using Capacitor, but: Capacitor can load a server.url pointing to our hosted app (great for reuse), but push notifications don’t work If we build the web app locally (npm run build) and embed it in the native iOS shell via Capacitor, push works We would prefer not to fully merge our authentication and main app UIs if avoidable Questions: Is there any approved way to enable push notifications in an iOS .ipa built from a hosted web app (URL) using PWA Builder? If not, is embedding the web assets locally the only Apple-approved way to get push support? Are there any best practices or native plugin recommendations (e.g., APNs or FCM) for handling push notifications in iOS app? Thanks in advance for any guidance. 🙏 Let me know if more technical details would help.
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1
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0
Views
137
Activity
Jun ’25