Notification only message: The payload contains a notification property, which will be used to present a visible notification to the user . Data only message: Also known as a “silent message”, this payload contains custom key/value pairs within the data property which can be used how you see fit.
Read moreHow do I use firebase cloud messaging?
Set up a Firebase Cloud Messaging client app on Android
Read moreHow do I enable cloud messaging on Firebase?
How to Configure and Enable Google Cloud Messaging (Firebase) in the mag+ Publish Portal
Read moreIs Google Firebase free to use?
Firebase offers a no-cost tier pricing plan for all its products . For some products, usage continues at no cost no matter your level of use. For other products, if you need high levels of use, you’ll need to switch your project to a paid-tier pricing plan. Learn more about Firebase pricing plans.
Read moreHow does cloud messaging work?
Short answer: FCM, or Firebase Cloud Messaging works by keeping a connection open towards the Google servers from your phone . This connection listens to messages from Google servers and takes action on your phone when messages are received.
Read more