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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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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86
Sep ’25
After uninstalling the app, ManagedSettingsStore.shield is still active — seems to be an Apple system behavior
I’m using the shielding API, my code: let store = ManagedSettingsStore() let whitelist = SharedDefaults.whitelistApplications store.shield.applicationCategories = .all(except: whitelist) And to clear the shield, my code is: store.shield.applications = nil store.shield.applicationCategories = nil The issue: Some users report that after uninstalling my app, the shield is still active, and the UI changes to the default iOS system interface. Even after restarting the device, the apps on the phone remains locked, so the user has no way to remove the shield. Recently I’ve received several complaints on social media and App Store comments, accusing my app of being malicious software. This is not a 100% reproducible bug, but it happens frequently enough. I was also able to reproduce it myself by uninstalling the app during an active lock session. Could Apple engineers please look into this issue and advise how to ensure that once the user uninstalls the app, the device is no longer locked?
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211
Oct ’25
NSUserNotificationsUsageDescription only works for certain locales
I'm trying to provide custom localized descriptions for the iOS notification permission popup in my app, which supports multiple locales. To achieve this, I'm using InfoPlist.strings files per locale with the following keys: NSUserNotificationsUsageDescription NSUserTrackingUsageDescription The issue I'm facing is that NSUserTrackingUsageDescription is working correctly across all tested locales, but NSUserNotificationsUsageDescription only works for some locales. Locales tested: Working: ja, tr, fr-CA Not working: fr-BE, nl-BE In each case, the correct localized NSUserTrackingUsageDescription appears, but the NSUserNotificationsUsageDescription falls back to the default or does not appear as expected in fr-BE and nl-BE. I'm using Xcode 16 and testing on both iOS 18 simulator and physical devices, and the issue is consistent across both. Any insights on whether this is a known issue in iOS or if there are additional steps needed for NSUserNotificationsUsageDescription to localize properly would be greatly appreciated.
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217
Jun ’25
Detecting Notification Banners, DND, and other screen anomalies
Is there a public method to know when an APNS has appeared on the screen? wrapping up a very high end photogrammetry app, using the front facing camera and screen illumination- incoming notifications completely throw off the math. Ideally, it would be great to turn on Do Not Disturb for the short process, but we’d settle for just the detection of the notification banner. also: extra credit - programattically adjusting Auto Dimming, and True Tone would be lovely too.
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60
May ’25
Notifications scheduled but never delivered at scheduled time
Device: iPhone (real device) iOS: 17.x Permission: Granted Notifications are scheduled using UNCalendarNotificationTrigger. The function runs and prints "SCHEDULING STARTED". However, notifications never appear at 8:00 AM, even the next day. Here is my DailyNotifications file code: import Foundation import UserNotifications enum DailyNotifications { // CHANGE THESE TWO FOR TESTING / PRODUCTION // For testing set to a few minutes ahead static let hour: Int = 8 static let minute: Int = 0 // For production use: // static let hour: Int = 9 // static let minute: Int = 0 static let daysToSchedule: Int = 30 private static let idPrefix = "daily-thought-" private static let categoryId = "DAILY_THOUGHT" // MARK: - Permission static func requestPermission(completion: @escaping (Bool) -> Void) { let center = UNUserNotificationCenter.current() center.requestAuthorization(options: [.alert, .sound]) { granted, _ in DispatchQueue.main.async { completion(granted) } } } // MARK: - Schedule static func scheduleNext30Days(isPro: Bool) { print("SCHEDULING STARTED") let center = UNUserNotificationCenter.current() center.getNotificationSettings { settings in guard settings.authorizationStatus == .authorized else { requestPermission { granted in if granted { scheduleNext30Days(isPro: isPro) } } return } // Remove old scheduled notifications center.getPendingNotificationRequests { pending in let idsToRemove = pending .map { $0.identifier } .filter { $0.hasPrefix(idPrefix) } center.removePendingNotificationRequests(withIdentifiers: idsToRemove) let calendar = Calendar.current let now = Date() for offset in 0..<daysToSchedule { guard let date = calendar.date(byAdding: .day, value: offset, to: now) else { continue } var comps = calendar.dateComponents([.year, .month, .day], from: date) comps.hour = hour comps.minute = minute guard let scheduleDate = calendar.date(from: comps) else { continue } if scheduleDate <= now { continue } let content = UNMutableNotificationContent() content.title = "Just One Thought" content.sound = .default content.categoryIdentifier = categoryId if isPro { content.body = thoughtForDate(scheduleDate) } else { content.body = "Your new thought is ready. Go Pro to reveal it." } let triggerComps = calendar.dateComponents( [.year, .month, .day, .hour, .minute], from: scheduleDate ) let trigger = UNCalendarNotificationTrigger( dateMatching: triggerComps, repeats: false ) let identifier = idPrefix + isoDay(scheduleDate) let request = UNNotificationRequest( identifier: identifier, content: content, trigger: trigger ) center.add(request) } } } } // MARK: - Cancel static func cancelAllScheduledDailyThoughts() { let center = UNUserNotificationCenter.current() center.getPendingNotificationRequests { pending in let idsToRemove = pending .map { $0.identifier } .filter { $0.hasPrefix(idPrefix) } center.removePendingNotificationRequests(withIdentifiers: idsToRemove) } } // MARK: - Helpers private static func isoDay(_ date: Date) -> String { let formatter = DateFormatter() formatter.locale = Locale(identifier: "en_US_POSIX") formatter.dateFormat = "yyyy-MM-dd" return formatter.string(from: date) } private static func thoughtForDate(_ date: Date) -> String { guard let url = Bundle.main.url(forResource: "thoughts", withExtension: "json"), let data = try? Data(contentsOf: url), let quotes = try? JSONDecoder().decode([String].self, from: data), !quotes.isEmpty else { return "Stay steady. Your growth is happening." } let calendar = Calendar.current let comps = calendar.dateComponents([.year, .month, .day], from: date) let seed = (comps.year ?? 0) * 10000 + (comps.month ?? 0) * 100 + (comps.day ?? 0) let index = abs(seed) % quotes.count return quotes[index] } } Then here is my Justonethoughtapp code: import SwiftUI import UserNotifications @main struct JustOneThoughtApp: App { @StateObject private var thoughtStore = ThoughtStore() // MUST match App Store Connect EXACTLY @StateObject private var subManager = SubscriptionManager(productIDs: ["Justonethought.monthly"]) var body: some Scene { WindowGroup { ContentView() .environmentObject(thoughtStore) .environmentObject(subManager) .onAppear { // Ask for notification permission NotificationManager.shared.requestPermission() // Schedule notifications using PRO status DailyNotifications.scheduleNext30Days( isPro: subManager.isPro ) } } } } final class NotificationManager { static let shared = NotificationManager() private init() {} func requestPermission() { UNUserNotificationCenter.current().requestAuthorization( options: [.alert, .sound, .badge] ) { _, _ in } } }
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2w
APNS Connection Timed out
This error has been continuously occurring for about 9 hours. We have not replaced the certificate, modified the server code, or changed the firewall policy. Some requests succeed, but many are timing out, with several timeouts occurring every minute. We are unable to find the cause. Please help. APNS Exception io netty channel ConnecttimeException: Connection timed out
APNSOutboundHandler api.push.apple.com/17.188.169.28:443 api.push.apple.com/(other ip):443 api.push.apple.com/(other ip):443 api.push.apple.com/(other ip):443 api.push.apple.com/(other ip):443 ...
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713
Apr ’25
Voice control puts three icons in the menu bar
Having voice control enabled now puts three menu bar items. The blue icon it has always had, supplemented with an orange microphone and an orange dot next to control center. I know this orange icon is there to notify me that a third-party application is accessing the microphone, but this is a first-party system service that is always running. If another app starts accessing the microphone I won't know, since the orange icon is always there anyway. It's like a California prop 65 warning. Maybe it was a good idea in principal but with it being ubiquitous everyone just ignores it. Siri is also always accessing the microphone, but doesn't trigger this orange eyesore because it's a system service. Both Siri and voice control are always on in the background, are first-party system services that must be specifically enabled, and both have their own menu bar icon that can be removed if not wanted. This orange icon with voice control potentially introduces MORE risk by training me to ignore the orange icon. Please return to the pre-26.3 behaviour of using this orange icon for third-party apps and not first-party system services. FB22036182 -- "Voice control causes extra menu bar icon"
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25
1w
CarPlay: no banner or sound for APNs while connected, works on phone (iOS 18.0, UNNotificationCategoryOptions.allowInCarPlay)
Hi everyone! I’m integrating push notifications for a taxi-driver app and ran into a blocking CarPlay issue. When the iPhone is connected to CarPlay (wired or wireless), the push arrives on the phone without any sound and nothing is shown or announced on the CarPlay screen. If I unplug CarPlay, the same push plays the default sound and shows a normal banner on the lock screen, so the payload itself looks valid. Environment iPhone 13 Pro, iOS 18.0 CarPlay head-unit: Xcode 16.2 CarPlay Simulator App built with Flutter 3.22 + firebase_messaging: ^15.2.5 Deployment target: iOS 14.0 Xcode capabilities enabled: Push Notifications, Time-Sensitive Notifications App settings on the device: Allow Notifications -› Sounds ON, Show in CarPlay ON Siri › Announce Notifications › CarPlay: master toggle ON + my app added to the allowed list Driving Focus = Off (same result if it’s On) Native setup in AppDelegate.swift UNUserNotificationCenter.current().requestAuthorization( options: [.alert, .sound, .badge, .carPlay] ) { _,_ in } let carPlayCategory = UNNotificationCategory( identifier: "CARPLAY_ORDER", actions: [], intentIdentifiers: [], options: [.allowInCarPlay] ) UNUserNotificationCenter.current().setNotificationCategories([carPlayCategory]) UNUserNotificationCenter.current().delegate = self application.registerForRemoteNotifications() APNs payload that I send via FCM { "aps": { "alert": { "title": "New test order", "body": "Location info test" }, "sound": "default", "category": "CARPLAY_ORDER", "interruption-level": "time-sensitive", "relevance-score": 1 } } What could be the problem? Please help me solve the error
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162
Jun ’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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244
Oct ’25
No notification sound when CarPlay is connected
We're building a taxi driver app. Our goal is simple: Play a notification sound when a new ride request arrives — even if the iPhone is connected to CarPlay. We use Firebase push with "sound": "default" and "interruption-level": "time-sensitive". The app requests .carPlay and uses a category with .allowInCarPlay. Everything works when CarPlay is disconnected — we get sound and banner. But when connected to CarPlay: the push is delivered silently, no sound is played (even on the phone), Siri Announce is enabled, but nothing is spoken. Questions: Is notification sound blocked when CarPlay is active, unless the app has CarPlay entitlement? Is Siri Announce the only way to notify the driver audibly in this case? Would getting a CarPlay entitlement (e.g. CarPlay.communication) fix this without building a full CarPlay UI? Thanks — all we need is a reliable sound alert when a new ride comes in.
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106
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.
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3d
How to correctly convert the bytes type devicetoken obtained from the MDM description file to the 16-bit hexadecimal data required by APNS?
I have converted a large part of the data, but only 5% of the data was successfully converted. The failed devicetoken shows "bad devicetoken" when accessing APNS. Here are examples of failed conversions devicetoken. Is there any official documentation for this part? DeviceToken Orgin \xc2\xa1\xcb\x9cr\xc3\x81\xe2\x80\x9e\x01b\xc3\xbce1pf\t\xc2\xa7\xc3\x82v}\xc3\xa1\xc3\x9a:?\r\n\xc3\xa5\xc6\x92\xc3\xb7y\xc3\x9e\xe2\x80\x9c\xc3\x89r
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88
Jun ’25
App Store Server Notification Issue
Hello, I am writing this because the behavior of the App Store Server Notification that our server receives is problematic in the Sandbox environment. I have two questions in total. When purchasing a Free Trial subscription, after receiving the SUBSCRIBED / INITAL_BUY Notification, DID_RENEW should be sent when it expires, but DID_FAIL_TO_RENEW/GRACE_PERIOD is sent. The EXPIRE Notification is sent after the subscription expires or DID_CHANGE_RENEWAL_STATUS/AUTO_RENEW_DISABLED is sent, but it does not arrive. The first problem is that I recently heard that automatic payments after a free trial require the user's consent via email. Is this the reason? If so, I am curious about how I can test it in the Sandbox environment. Is the second problem a bug?
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137
Apr ’25
Alternate App Icon Change Does Not Reflect in Notification Center on iOS 18.1+
Version: iOS 18.1 and later (works as expected on iOS 18.0 and earlier) Area: SpringBoard / Notification Center / App Icon Rendering Description: When changing the app's alternate icon using UIApplication.setAlternateIconName(_:completionHandler:), the icon is updated correctly on the Home Screen and App Switcher. However, in Notification Center, the old app icon is still shown for notifications, even after the change has completed. This issue only occurs on iOS 18.1 and later. In iOS 18.0 and earlier, Notification Center correctly reflects the updated icon. - Steps to reproduce: Create an iOS app with alternate app icons configured in the Info.plist. Use UIApplication.shared.setAlternateIconName("IconName") to change the icon at runtime. Send a notification. Pull down Notification Center and observe the icon shown beside the notification. - Expected Behavior: Notification Center should reflect the updated (alternate) app icon immediately after the change. - Actual Behavior: Notification Center continues to display the old (primary) app icon. The new icon appears correctly on the Home Screen and App Switcher. Restarting the device does cause Notification Center to update and reflect the correct icon, which suggests a cache or refresh issue in SpringBoard or Notification Center. - Notes: Issue introduced in iOS 18.1; not present in 18.0. Reproduces on both physical devices and simulators. Occurs with both scheduled local notifications and remote notifications. Restarting the device updates the Notification Center icon, but this is not a viable user-facing workaround.
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203
Apr ’25
Critical Alerts Entitlement
Hi Team, We’re following up on our request for the Critical Alert entitlement for our app, which we plan to use to notify users about critical states of their devices. It’s been almost 4 weeks since we submitted the request, and we wanted to check on the typical review timeline so we can plan our upcoming work accordingly. If there’s anything we can provide or clarify to help complete the review or make the process easier, we’d be happy to assist. or the right forum to reach out to.
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63
Jul ’25