I changed my apple ID and now I cannot change it on my iPhone
I changed my apple id, now I cannot change my the apple id on my phone or on an ipad
iPhone 12 Pro Max, iOS 14
Question marked as
What happens when you try? Error message(s)?
If you have changed your ID or password, have you followed the steps in this article?
What to do after you change your Apple ID or password - Apple Support.