What is FCM token in React Native?

Firebase Cloud Messaging (FCM) is a messaging solution that lets you reliably send messages at no cost to both Android & iOS devices . Using FCM, you can send data payloads (via a message) to a device for a specific application.

Do the following in your web or mobile app:

To use push notifications in a React Native application, first we need to register the app to get a push notification token . This token is a long string that uniquely identifies each device. Then, we’ll store the token in a database on the server, send a notification, and handle the received notifications we’ve sent.

1) Retrieve the current registration token