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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Apple Push Notification service server certificate update
The Certification Authority (CA) for Apple Push Notification service (APNs) is changing. APNs will update the server certificates in sandbox on January 20, 2025, and in production on February 24, 2025. All developers using APNs will need to update their application’s Trust Store to include the new server certificate: SHA-2 Root : USERTrust RSA Certification Authority certificate. To ensure a smooth transition and avoid push notification delivery failures, please make sure that both old and new server certificates are included in the Trust Store before the cut-off date for each of your application servers that connect to sandbox and production. At this time, you don’t need to update the APNs SSL provider certificates issued to you by Apple.
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Oct ’24
push notifications lost
Hi) we have two ios apps in same Firebase project - with different apple bundle ids. One of them had connected APNS with Firebase and everything had worked perfectly - push notifications where delivered every time. But recently we occationaly put same APNS to other our Firebase's ios app and as result we lost all pushes - on both app. After deletion APNS from both of them and reconnecting APNS to app with proper apple bundle id push notifications didn't start to work. could you please suggest what we are suppose to do to resolve issue?
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Do I need to update the certificate of the APNs?
Currently, our provider server uses token-based authentication with APNs. In addition, to establish a connection with APNs, we have installed the "AAACertificateServices 5/12/2020" certificate from the "Sectigo KnowledgeBase website" on the provider server. Question 1 Do I need to update the server certificate of the Apple Push Notification Service at the following URL for the above provider server? URL https://developer.apple.com/jp/news/?id=09za8wzy Question 2 If registration is required, how long will it be valid for? Root certificate https://developer.apple.com/documentation/usernotifications/setting-up-a-remote-notification-server Token-based authentication https://developer.apple.com/documentation/usernotifications/establishing-a-token-based-connection-to-apns
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Should I prepare to Apple renewal of APNs USERTrust RSA Certification Authority certificate?
On apple dev site in the news section here you can find two announcements about their renewal of: USERTrust RSA Certification Authority certificate. Context: now, I have an app delivered via in-house distribution due to Apple developer Enterprise program. My app uses push notifications, but we are using auth tokens. Should I do something on the app? Should I advice backend colleague to check or do something server-side? below you can find the two announcements: sanbox link APNs Certificate Update Begins January 20, 2025 The Apple Push Notification service (APNs) will be updated with a new server certificate in sandbox on January 20, 2025. Update your application’s Trust Store to include the new server certificate: SHA-2 Root : USERTrust RSA Certification Authority certificate. and production link APNs Certificate Update Begins February 24, 2025 The Apple Push Notification service (APNs) will be updated with a new server certificate in production on February 24, 2025. Update your application’s Trust Store to include the new server certificate: SHA-2 Root : USERTrust RSA Certification Authority certificate.
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1d
Critical alert delay
I am sending push notifications to the app with critical alerts, but there is a significant delay. If the number of target devices is 1000 or less, notifications will be received normally within a few seconds to a minute. Once the number of target devices exceeds 1000, some devices will arrive quickly (normally within a few seconds to 1 minute) and others will arrive late (3 minutes to 15 minutes, divided into hundreds of items). In severe cases, notifications to more than 80% of devices will be delayed. Example: If you send 3000 notifications at once,  1 minute: Notify 400 items  5 minutes: Notify 1000 items  10 minutes: Notify 1000 items  13 minutes: Notify 600 items *The timing of 5 minutes, 10 minutes, and 13 minutes changes every time and is not at regular intervals. We understand that according to the push notification specifications, sending several thousand messages at once is not a problem. Please let me know if there is a rule, such as sending 1000 items at a time, in order to deliver quickly and with minimal delay.
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Disable optimised battery charging notifiction
I am on the developer beta ios 18.2 beta 3 on Iphone 16 Pro Max and, if I enable battery optimization charging I am woken up during the night when it is charged to 100% (which by the way isn't a couple of hours before my scheduled alarm goes off at 05:30 every day it reaches 100 about 3-4 hours earlier). There are no other notifications firing and if I turn this off and set the charge limit to 80% it successfully charges to this overnight without any notifications. If there isn't an option please can one be added as currently, I am unable to use this feature without being woken up during the night? The charger is new and connection is fine as there are no other sounds until the optimized charging reaches 100%.
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6d
Difference between Push delivery metrics in APNs console vs. 410 code for unregistered tokens
Hi there, We’re using APNs Push delivery metrics, which provide a breakdown including metrics like Received by APNs, Delivered to Device, and Discarded - Token Unregistered. To track unregistered tokens on our end, we also monitor the 410 error responses from APNs, which typically indicate that a token is no longer valid. However, we’ve noticed a discrepancy: the number of 410 errors we receive is much lower than the Discarded - Token Unregistered count shown in the APNs console. Is this difference expected? Specifically, does APNs sometimes know that a token is unregistered but still return a success status to us when we attempt to send a push to that token? Thank you for any insights you can provide!
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1w
Email notification on Lock Screen not appearing
Using the native email ios mail app iPhone 16 pro. When an email arrives the phone will ding or vibrate, but the message notification doesn't appear on lock screen. If you touch the screen from dim to wake then scroll up, the email notification does appear. If the phone is open the notification also appears at the top of screen as it's meant to do. This started yesterday with iOS 18.2 beta 1. It was not resolved with the new update.
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APNS: Unexpired, priority=10, type=alert sometimes do not appear in Notification Center when coming back online
System Information: iPhone 13, iOS 17.6.1 Steps to reproduce: Open my app, causing it to register for an APNS token Kill my app to make sure it is not in the foreground Send a push notification with a payload similar to this: {"aps":{"alert":{"title":"My App Name","body":"10:24am 🚀🚀🚀"}},"price":19,"clock":175846989,"time":1731001868.379526} And the following attributes: Expiry: (Date that is 7 days from now) Type: Alert Priority: High (10) Payload Size: 141 bytes The notification appears in the Notification Center, as expected Turn on Airplane Mode (WiFi=off) Wait between 60 seconds - 8 hours (varies) Send the same notification payload/attributes again Wait between 60 seconds - 8 hours (varies) Turn on WiFi Wait 1-30 minutes (varies) Expected behavior: The notification appears in the Notification Center Actual behavior: Push notifications from other apps immediately appear in the Notification Center Roughly 30% of the time: The push notification(s) from my app never arrive, even after waiting 30 minutes Roughly 70% of the time: The notification appears in the notification center, and everything works fine Thoughts: Expiry must be set correctly because I've seen my notifications get queued and then delivered (correctly) in the CloudKit Push Notification tool. Identical notifications (payload, APNS headers, etc.) are also sent to other devices at the same time. They receive the notifications just fine. It must not be my iPhone's notification Settings, because notifications appear correctly when online I've tried restarting the iPhone, it did not fix this issue So it seems it must be an unexpected behavior in APNS or something broken with my specific phone? Not sure what else I could possibly do to make sure the notifications arrive. This breaks the entire experience of my app. I need to be able to notify users of incoming messages so they do not miss them.
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It didn't get any notifications after changing the device token. (Voip, APNs)
I am developing the iOS application using PushKit and APNS. Some users didn't get any notifications after some events, such as updated iOS 18 or a new version from the App Store. After the event had changed device tokens (PushKit, APNS). When the app has launched, register the iOS system with PushKit and APN tokens and upload it to our server. Most of the time, the tokens didn't change. I was investigating the console log when making a call from another device or sending APN. But I didn't get any logs from it. Normally it is looking following apsd, callserviced, Springboard, delivering or launching the app when getting a voip push. The issue was solved after reinstalling the app. But it still occurred with users—about 1% of total.  How do I solve the issue without reinstalling the app?
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1w
Support Status and Specific Implementation Methods for ContactProviderExtension with NotificationServiceExtension
I am considering an implementation to provide OS Contacts information in real-time using data from push notifications. Through a TSI (Technical Support Incident), Apple Support recommended combining ContactProviderExtension and NotificationServiceExtension. However, the following threads indicate that this combination is not supported, as confirmed by Apple DTS (Thread 1, Thread 2). Question 1: Latest Support Status for Using ContactProviderExtension with NotificationServiceExtension Additionally, there is limited documentation on implementing ContactProviderExtension, and I am specifically struggling with the following points: Question 2: Specific Implementation Guidance for ContactProviderExtension The method to call when providing Contacts information to the OS How to add and delete Contacts information provided to the OS How to verify the Contacts information currently provided to the OS Any insights on the latest support status or specific implementation methods for these extensions would be greatly appreciated.
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1w
Is applicationIconBadgeNumber deprecated?
Our team had previously encountered deprecation warnings for applicationIconBadgeNumber, but while working with iOS 18.0.1 and Xcode version 16.1, I no longer see these warnings. Has the deprecation been reversed, or do we need to address it on our end? Please provide insights on whether the deprecation still applies, as there are no warnings in Xcode for that API and action items on the integrators.
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1w
Short spikes in timeout calling APNS
Hello, I would like to check with you on a possible APNS issue. We saw a huge spike in the number of failed requests towards APNS (both api.push.apple.com and api.development.push.apple.com). On October 31st, at 13:39 (during 1 or 2 minutes), more than 700k requests failed. Which means more than 10% of all requests made by our service to api.push.apple.com. Our service is sending notification requests for more applications, different AppIds, in high amounts. Even more concerning is the fact that it happens more or less regularly now. 2-3 times a week. Still, just for short time, but I would like to check with APNS, whether it is something you know about. Checking graphs in CloudKit did not help me much. They don't allow good enough granularity. Not more precise than 1 day. Please, let me know if you are aware of some very short transient issues in APNS. Happening more or less regularly, with noticeable impact.
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About “Apple Push Notification service server certificate update”
Apple Push Notification service server certificate update https://developer.apple.com/news/?id=09za8wzy All developers using APNs will need to update their application’s Trust Store to include the new server certificate What exactly should developers do? Please tell me the specific method. Please make sure that both old and new server certificates are included in the Trust Store before the cut-off date for each of your application servers that connect to sandbox and production. How do I make sure that both the old and new server certificates are in the Trust Store? Thank you for your understanding.
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1w
ANCS: Managing Multiple Calls on Nordic Semiconductor Watch
Hello, We’re working on a connected watch that displays notifications and handles calls using the ANCS (Apple Notification Center Service) on a Nordic Semiconductor platform. We can manage a single call by monitoring notifications with Category ID: Incoming Call and Category ID 12: Active Call, which lets us display the call status on the watch. However, we’re facing challenges with handling multiple calls, especially around holding and resuming calls. Our key issues are: Tracking Call on Hold: When the first call is put on hold to answer a second call, ANCS removes the first call notification. This leaves us unable to track if there’s a call on hold until it’s resumed and reappears as an Active Call. Is there any ANCS flag, category ID, or other mechanism to indicate a call is on hold? Tracking Total Call Duration: When resuming a held call, ANCS assigns a new Active Call category ID with a new timestamp, which reflects the resumption time rather than the original call start time. This complicates tracking the total elapsed time. Is there a way to identify that this resumed call is the same as the original one to retain the initial timestamp? Any insights or workarounds would be greatly appreciated! Thank you.
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1w
Is there a way for a device to detect when VoIP Push has been blocked?
Hello, I am developing an application using VoIP Push and CallKit. I have a question: Starting with iOS 13, I understand that under the VoIP Push policy, if reportNewIncomingCall is not called continuously, the VoIP Push may be blocked. Is there a way to determine if the device has been blocked? I am curious whether PKPushRegistry itself is unable to receive pushes or if reportNewIncomingCall returns an error when it is blocked. If push notifications are not being received, what should I do to resume receiving them? Thank you.
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