Is it possible that a downloaded and installed app can still do push notifications even though the user has never once launched the app?
1 Answers
In order for Firebase Cloud Messaging to send messages to an app on a specific device, the app must have collected a device ID token. This requires that the app have been launched at least once, so the app code can get that token and send it to your backend. If the app was never launched, that means it never had a chance to collect that token, and messaging to it is not possible.
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