Could Not Activate iPhone iPad after iOS 11 -12 Update

What To Do If Can't Activate iPhone After iOS 11/12 Upgrade
The Causes of iPhone/iPad Activation Errors after iOS 12 Update
If you experience the above errors while activating your iOS device you're probably having a bad day. Generally, such problems rarely occur, but if it has happened, it could be caused by many reasons. Possible reasons behind the iPhone activation issue are listed below:

Probably, Apple service is experiencing a high up time. A high volume of traffic can make the server busy enough. As a result the activation error pops up.
Unstable connection can also make this happen. Check your WiFi connection if it isn't working properly.
Jailbreaking iPhone (tampering it, hacking it or even modifying it anyway other than what is permitted by Apple) can also increase the chances of causing the activation error.
Unlocking the SIM of a locked device could also elevate the problems and cause activation error. This is because your previous carrier may not have permitted you to unlock that iPhone.

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[derickmuir]

Okay I have a iPod video 5th gen and I tried everything to get it back from the infinite loop and get past the restore mode

[tutuhenry]

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