When you use the push notification features, your screen may look as the following images.

Subscribing

The first time you use the application, the feature status is not subscribed, and the permission status prompts.

When the subscribe method is called, the allow notifications message prompts.

When you allow notifications, it registers the user to receive notifications.

Receiving Notifications

When a notification is sent, users will see the following screen based on their platform:

When a notification is sent, users will see the following notification centre based on their platform: