Determine on iPhone if user has enabled push notifications

iPhone

push notifications

user settings

app development

iOS features

Determine on iPhone if user has enabled push notifications

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iOS & Android

Introduction

To check whether a user has enabled push notifications on iOS, you use UNUserNotificationCenter.current().getNotificationSettings(). This async method returns a UNNotificationSettings object with an authorizationStatus property that tells you whether notifications are authorized, denied, provisional, or not yet requested. The approach differs between modern iOS (10+) and legacy versions, and you should always check status before attempting to send or schedule notifications.

Modern Approach: UNUserNotificationCenter (iOS 10+)

swift

1import UserNotifications
2
3func checkNotificationStatus() {
4    UNUserNotificationCenter.current().getNotificationSettings { settings in
5        switch settings.authorizationStatus {
6        case .authorized:
7            print("Notifications are enabled")
8        case .denied:
9            print("Notifications are denied — user must enable in Settings")
10        case .notDetermined:
11            print("User hasn't been asked yet")
12        case .provisional:
13            print("Provisional notifications enabled (quiet delivery)")
14        case .ephemeral:
15            print("Ephemeral notifications (App Clips)")
16        @unknown default:
17            print("Unknown status")
18        }
19    }
20}

The callback runs on a background thread — dispatch to the main queue for UI updates:

swift

1UNUserNotificationCenter.current().getNotificationSettings { settings in
2    DispatchQueue.main.async {
3        if settings.authorizationStatus == .authorized {
4            self.showNotificationBadge()
5        } else {
6            self.showEnableNotificationsPrompt()
7        }
8    }
9}

Checking Individual Notification Types

Beyond the overall authorization, you can check specific delivery methods:

swift

1UNUserNotificationCenter.current().getNotificationSettings { settings in
2    print("Alerts: \(settings.alertSetting == .enabled)")
3    print("Badges: \(settings.badgeSetting == .enabled)")
4    print("Sounds: \(settings.soundSetting == .enabled)")
5    print("Lock screen: \(settings.lockScreenSetting == .enabled)")
6    print("Notification center: \(settings.notificationCenterSetting == .enabled)")
7    print("Critical alerts: \(settings.criticalAlertSetting == .enabled)")
8
9    // Each setting can be .enabled, .disabled, or .notSupported
10}

A user might have notifications authorized but alerts disabled — they would only receive badge updates.

Requesting Permission

If the status is .notDetermined, request permission:

swift

1func requestNotificationPermission() {
2    UNUserNotificationCenter.current().getNotificationSettings { settings in
3        guard settings.authorizationStatus == .notDetermined else { return }
4
5        UNUserNotificationCenter.current().requestAuthorization(
6            options: [.alert, .badge, .sound]
7        ) { granted, error in
8            if granted {
9                DispatchQueue.main.async {
10                    UIApplication.shared.registerForRemoteNotifications()
11                }
12            }
13            if let error = error {
14                print("Error requesting notifications: \(error)")
15            }
16        }
17    }
18}

Using async/await (iOS 15+)

swift

1func checkAndRequestNotifications() async -> Bool {
2    let center = UNUserNotificationCenter.current()
3    let settings = await center.notificationSettings()
4
5    switch settings.authorizationStatus {
6    case .authorized, .provisional:
7        return true
8    case .notDetermined:
9        do {
10            let granted = try await center.requestAuthorization(options: [.alert, .badge, .sound])
11            if granted {
12                await MainActor.run {
13                    UIApplication.shared.registerForRemoteNotifications()
14                }
15            }
16            return granted
17        } catch {
18            return false
19        }
20    case .denied, .ephemeral:
21        return false
22    @unknown default:
23        return false
24    }
25}

Directing Users to Settings

Once a user denies notifications, you cannot re-prompt them. The only option is to direct them to the Settings app:

swift

1func openNotificationSettings() {
2    if let url = URL(string: UIApplication.openSettingsURLString) {
3        UIApplication.shared.open(url)
4    }
5}
6
7// Show a custom UI explaining why they should enable notifications
8func promptToEnableInSettings() {
9    let alert = UIAlertController(
10        title: "Enable Notifications",
11        message: "Turn on notifications in Settings to receive updates.",
12        preferredStyle: .alert
13    )
14    alert.addAction(UIAlertAction(title: "Open Settings", style: .default) { _ in
15        self.openNotificationSettings()
16    })
17    alert.addAction(UIAlertAction(title: "Not Now", style: .cancel))
18    present(alert, animated: true)
19}

SwiftUI Integration

swift

1import SwiftUI
2import UserNotifications
3
4class NotificationManager: ObservableObject {
5    @Published var isAuthorized = false
6    @Published var isDenied = false
7
8    func checkStatus() {
9        UNUserNotificationCenter.current().getNotificationSettings { settings in
10            DispatchQueue.main.async {
11                self.isAuthorized = settings.authorizationStatus == .authorized
12                self.isDenied = settings.authorizationStatus == .denied
13            }
14        }
15    }
16}
17
18struct ContentView: View {
19    @StateObject private var notifications = NotificationManager()
20
21    var body: some View {
22        VStack {
23            if notifications.isAuthorized {
24                Text("Notifications are enabled")
25            } else if notifications.isDenied {
26                Button("Enable in Settings") {
27                    if let url = URL(string: UIApplication.openSettingsURLString) {
28                        UIApplication.shared.open(url)
29                    }
30                }
31            }
32        }
33        .onAppear { notifications.checkStatus() }
34    }
35}

Legacy Approach (pre-iOS 10)

swift

1// Deprecated — only use for iOS 9 and earlier support
2if UIApplication.shared.isRegisteredForRemoteNotifications {
3    let types = UIApplication.shared.currentUserNotificationSettings?.types ?? []
4    if types.contains(.alert) || types.contains(.badge) || types.contains(.sound) {
5        print("Notifications enabled")
6    }
7}

Common Pitfalls

Checking status synchronously: getNotificationSettings is async. Calling it and immediately checking a flag before the callback runs gives stale results. Always use the completion handler or await.
Confusing .authorized with registered for remote: authorizationStatus == .authorized means the user approved local and remote notification display. You still need to call registerForRemoteNotifications() separately to get a device token for push.
Re-requesting after denial: requestAuthorization does nothing if the user already denied — it returns false immediately without showing a prompt. You must direct users to Settings.
Not rechecking on app foreground: Users can change notification settings at any time. Check status in applicationDidBecomeActive or sceneDidBecomeActive to stay current.
Provisional notifications: .provisional means quiet delivery (notification center only, no alerts or sounds). Do not treat it the same as .authorized for features that rely on visible alerts.

Summary

Use UNUserNotificationCenter.current().getNotificationSettings() to check notification status (iOS 10+)
Check authorizationStatus for overall permission and individual settings (alerts, badges, sounds) for specific capabilities
Request permission only when status is .notDetermined — denied users must go to Settings
Use UIApplication.openSettingsURLString to deep-link users to your app's Settings page
Recheck notification status on every app foreground since users can change settings at any time
Use async/await on iOS 15+ for cleaner notification permission flows

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Interview Questions practice on Codemia

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Determine on iPhone if user has enabled push notifications

Interview Questions practice on Codemia

Introduction

Modern Approach: UNUserNotificationCenter (iOS 10+)

Checking Individual Notification Types

Requesting Permission

Using async/await (iOS 15+)

Directing Users to Settings

SwiftUI Integration

Legacy Approach (pre-iOS 10)

Common Pitfalls

Summary

Related reading

Tackling System Design Interview Problems

Track what you have practised

Interview Questions practice on Codemia