SendPushNotificationFCM An Android App Util of how to push a notification using Firebase Cloud Messaging Kotlin Push Notification Firebase Cloud Messaging - FCM Send notification from Firebase console FCM To find the server key, go to the Firebase console: To access the device fcm registration token: https://firebase.google.com/docs/cloud-messaging/android/client#retrieve-the-current-registration-token https://firebase.google.com/docs/cloud-messaging/android/client#monitor-token-generation Reference https://www.youtube.com/watch?v=2xoJi-ZHmNI