Firebase Cloud Messaging (FCM) is the new version of GCM. It inherits the reliable and scalable GCM infrastructure, plus new features! See the FAQ to learn more. If you are integrating messaging in a new app, start with FCM. GCM users are strongly recommended to upgrade to FCM, in order to benefit from new FCM features today and in the future. Before you go, please visit our GCM and FCM developer survey to give us feedback!

GCM and FCM Frequently Asked Questions

We’ve integrated Cloud Messaging with Firebase and introduced many improvements. Here is an FAQ to help you understand how these updates may impact you. If you have a question that's not here, use the Send Feedback link at top right to let Google know.

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Cloud Messaging
Cloud Messaging