Firebase Cloud Messaging (FCM), formerly known as Google Cloud Messaging (GCM), is a cross-platform cloud solution for messages and notifications for Android, iOS, and web applications, which as of 2021 can be used at no cost.
Read moreHow is FCM token generated?
As per the FCM docs: On initial startup of your app, the FCM SDK generates a registration token for the client app instance . If you want to target single devices or create device groups, you’ll need to access this token.
Read moreHow long is FCM token valid?
It doesn’t expire though.1 Şub 2017
Read moreCan a device have multiple FCM tokens?
Yes. A user could have multiple devices , a case where Device Groups are commonly used.
Read moreHow long do FCM tokens last?
It doesn’t expire though.
Read moreIs FCM token secret?
According to this link, the registration token must be kept secret . Registration token: An ID generated by the FCM SDK for each client app instance. Required for single device and device group messaging. Note that registration tokens must be kept secret.
Read moreWhat is FCM device token?
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. Each message can transfer a payload of up to 4KB to a client.
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