How can I know the APNs notificaiton is sent to device(success/receive time)?

How can I know the APNs notificaiton is sent to device(success/receive time)? In my notification server, it only get the result of sending a notification to APNs, not from the APNs to device.

Replies

APNS Feedback Service Discontinuation https://developer.apple.com/forums/thread/649543