FCM Expired Tokens > Increased Android Unsubscribes
5 months ago
On May 15, 2024, Google's FCM service will start to expire stale push tokens for devices that have been inactive for more than 270 days. You may see a spike in Android unsubscribes when sending notifications due to this change. Don't panic! These are devices that have not been online in over 270 days and are part of Google's Best practices for FCM registration token management. If the device does come back online and opens your app, OneSignal will automatically resubscribe them to push if they were previously subscribed already.
More details in our FCM Expired Token FAQ.