With the product announcement coming out last night: https://support.workspaceone.com/articles/360015465213-Upcoming-Changes-to-Cloud-Messaging-Services-... I was wanting to test connections from my devices and found this app to be useful so far: https://play.google.com/store/apps/details?id=com.firstrowria.pushnotificationtester Just thought I would share it.
Keywords: GCM FCM Firebase Google Cloud Messaging
