Apple ID change
I purchased a new iPad and used iCloud or restore. It has an old Apple ID which I would like to update. How do I update my old Apple ID to my current Apple ID?
iPad Pro, iOS 11
Please see these Apple documents:
Change your Apple ID password
https://support.apple.com/en-us/HT201355
Change the email address associated with your Apple ID
https://support.apple.com/en-us/HT202667
What to do after you change the email address associated with your Apple ID or password