On April 10, 2018, Google deprecated GCM. The GCM server and client APIs were removed on May 29, 2019. Migrate GCM apps to Firebase Cloud Messaging (FCM), which inherits the reliable and scalable GCM infrastructure, plus many new features. See the migration guide to learn more.

GCM and FCM Frequently Asked Questions

We’ve removed GCM, 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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