IPhone 13 Pro Max problems since upgrading to IOS 16

[judgejoyce]

My problems since installing IOS 16 are so many it’s hard to keep track. I thought it was the phone and through the assistance of the Office of the President of ATT I got a replacement phone. But I am having the same problems. It won’t connect to my home Wi-Fi, and in the ATT store when trying to activate the replacement phone it kept going on and off Wi-Fi. It shows that it is connected, but in the upper right it shows only 5G or LTE. And to make matters worse, 5G won’t connect to the internet. I’m attaching photos to show the error messsages. I have done hours and hours of work with Apple and ATT techs including the senior ATT Executive Offices tech representative. I can use e-mail and text messages and bluetooth still works. I can occasionally make calls, but not all the time. I tried all the fixes on a website I found about the problems but nothing works. Does anyone have a solution? Tomorrow I am sending another e-mail to Tim Cook and will go to the CT Attorney General if I don’t get a solution.