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 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 moreHow long do FCM tokens last?
It doesn’t expire though.
Read moreCan a device have multiple FCM tokens?
Yes. A user could have multiple devices , a case where Device Groups are commonly used.
Read moreDoes FCM token change?
To cover all cases, you should adopt a threshold for when you consider tokens stale; our recommendation is two months. Any token older than two months is likely to be an inactive device; an active device would have otherwise refreshed its token .
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.
Read moreHow can I get FCM token for my website?
Configure Web Credentials with FCM
Read more