how can i check my setting details are correct on my iPhone I recevied an error when sending a text this morning and while checking it out noticed my state and city are wrong

How can i check my setting / about tab? This morning I got an error message say something wasn't safe (not sure what) I think it was my common name whcih is ch4iv.myvzw.com and while looking in there I noticed my state say NJ I live in PA, I did not buy my phone in NJ, the city says Bedminster I have never even been there. Can anyone advise?

Can't I go on my Apple account and get to my setting / details.