Brand new iPhone 15 will not complete first update. Strong WiFi

Matt1121th Said:

"Brand new iPhone 15 will not complete first update. Strong WiFi: Strong WiFi brand new phone says there is 1 second remaining and stalls for the last 8 hours. Have tried multiple restarts always stalls in the same place"

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Update Using a Computer:

Have a Computer Handy? If so, try using a computer to update. Go here: Update your iPhone Using a Computer - User Tip. If any updates are availabe, they will install, sure enough.

If you connect to Wifi, doesn't necessarily mean you are connected to the internet. --> Cannot update iOS - Apple Community