Ak authentication error 7005

I Have recently acquired a new iPhone series 8, upon attempting an iCloud restore I had noticed even though I was connected to the Wi-Fi I had no internet connection at all and the Wi-Fi icon was not displayed in the top left hand corner as one would expect, I promptly tried resetting my device multiple times before switching to cellular data and interestingly discovered it too was not connecting to the internet despite displaying the 4g symbol and repeatable checking my cellular data balance, I then tried to factory reset my Device and encountered

"Ak authentication error 7005" displayed on the screen I tried resetting individual systems such as but not limited to network settings and location settings however this had 0 effect on my current set of circumstances, I am reasonably annoyed I have only just received the device as my previous device is not operational TO SAY THE LEAST. If anyone could provide me with any assistance it would be greatly appreciated

Kind Regards, An Annoyed Patron