As per older Apple documentation about debugging push notifications, there was a very helpful link and companion file here.
https://developer.apple.com/library/content/technotes/tn2265/_index.html
The Companion File on the top right is a mobile configuration profile to help configure log push messages on iOS, but the certificate in it is expired.
This PersistentConnectionLogging.mobileconfig is very helpful as it enables logging to determine if push notifications make it to the device or the device or don't even get to the device at all.
https://developer.apple.com/library/content/technotes/tn2265/tn2265_PersistentConnectionLogging.zip
Sadly, it's expired and with an outdated certificate backing it, it's not useful at all.
Has this been updated anywhere on Apple's dev site or is there any other modern means to accomplish the same thing?
Thanks,
Alex Zavatone