Steps to be followed:
Read moreHow do I send push notifications to a server?
Create a google API project. Enable push notifications for the project and get a API key. Get a registration ID through android app (each device has a registration ID for a specific application) Create a server application to send your push messages as push notifications through google servers by GSM.
Read moreHow do I send notifications from Firebase console to specific user?
How to send a message from the FireBase console?
Read moreCan Firebase send notification to user?
Using Firebase tools, you can send individual push notifications without needing a dedicated server, or a third-party service. … Firebase already has great tutorials on how to set FCM up on Android, iOS, and Web.16 Kas 2020
Read moreHow do I send push notifications to all devices?
Push notifications for FCM
Read moreHow do you send notifications to device on Android?
Send Device-to-Device Push Notification using Firebase Cloud Messaging
Read moreHow do I send push notifications to my phone?
Send Push Notifications to your Android app
Read more