Obtaining IP address

I was having my usual AT&T reboot issues and then recently, it’s in this “obtaining IP address” endless loop. It won’t even show that any of the LTE towers have any bars at all, except for the 3G tower which has full signal but will not connect.

I am in the Boston area, so while the internet may be overloaded and slow, I have to believe there is at least one tower that it could connect to. I have the AT&T unlimited plan through mobilemusthave if someone else is seeing these issues.

I reset back to factory settings. I am not sure if there is something else that I might be missing. It’s most likely on the AT&T side, but if someone else has some settings that help, it would be greatly appreciated.

Just a note. It was the SIM card.