You can track delivered to do push notification?

Is it possible for server applications to track it is if the user push a notification to your smartphone iOS/Android (for example when sending via firebase cloud messaging)?

In case the user banned notification or the phone is switched off..
April 7th 20 at 15:35
1 answer
April 7th 20 at 15:37
As far as I remember – it is impossible. It goes all. The only thing that you can keep track of did it or not, i.e., valid postoken or not, it is possible. Although maybe something has changed.

upd: on Android like it is possible https://firebase.google.com/docs/cloud-messaging/u...
but only if the FCM SDK >= 18.0.1

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