Use GCM Token for push messages in FCM

Question

Currently we have devices using old GCM implementation.

Does anyone know if it\'s possible to use old existing GCM tokens when sending push messages using firebase c

Answer 1

GCM token and firebase token are not the same. I did a test and subscribed to both services and saw that both tokens are different. you'll have to be very careful when using tokens to make sure. some 3rd party libraries still want to use GCM tokens while others are using firebase.

further, if you take a GCM token and try to use it in the firebase cloud messaging console to send a message, it might not be received by the android client. this was my case. i had to ensure i had a FCM token.