Similarly to how GCM works, the FCM token can change due to token-rotation. ... Note: the token rotation is a rare-event. Don't expect to see it often. But still, ... ... <看更多>
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Similarly to how GCM works, the FCM token can change due to token-rotation. ... Note: the token rotation is a rare-event. Don't expect to see it often. But still, ... ... <看更多>
Weeks or months later, when service is launched in their area, backend gets the FCM token from the database and sends a notification to the user ... ... <看更多>
... <看更多>