AppleID name and password change
I changed my AppleID and password on my laptop, but my iphone still reflects the previous ID. Why didnt't it update the phone reference?
iPhone XR, iOS 13
Question marked as
You have to change it on each device/computer. The change doesn't sync.
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