How can I migrate from GCM / FCM? Pushy Support May 19, 2020 22:20 Updated Please refer to our detailed migration guides to switch over painlessly: Migrating from FCMMigrating from GCM Related articles Does Pushy depend on Firebase Cloud Messaging? What is MQTT? Why are my notifications delayed when my Android app is in the background? Is there a limit on the number of notifications I can send with Pushy? Why do some Chinese devices fail to receive notifications in the background?