UNUserNotificationCenter.current().getNotificationSettings { (settings) in if settings.authorizationStatus == .authorized { // Already authorized } else { // Either denied or notDetermined UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .sound, .badge]) { (granted, error) in // add your own UNUserNotificationCenter.current().delegate = self let alertController = UIAlertController(title: "Notification Alert", message: "please enable notifications", preferredStyle: .alert) let settingsAction = UIAlertAction(title: "Settings", style: .default) { (_) -> Void in guard let settingsUrl = URL(string: UIApplicationOpenSettingsURLString) else { return } if UIApplication.shared.canOpenURL(settingsUrl) { UIApplication.shared.open(settingsUrl, completionHandler: { (success) in }) } } let cancelAction = UIAlertAction(title: "Cancel", style: .default, handler: nil) alertController.addAction(cancelAction) alertController.addAction(settingsAction) DispatchQueue.main.async { self.window?.rootViewController?.present(alertController, animated: true, completion: nil) } } } }