Change your Apple ID
Follow these steps to change the email address that you use as your Apple ID.
- Sign out of every Apple service and device that uses your Apple ID.
- Sign in to your Apple ID account page.
- In the Account section, click Edit. Under your Apple ID, click Change Email Address. You might be asked to answer one or more of your security questions.
- Enter the email address that you want to use as your Apple ID. A verification code will be sent to your new email address.
- Enter the verification code from the email into the fields provided and start using your updated Apple ID. Didn’t get the email?
- Sign back in to all Apple services with your new Apple ID.
After you change your Apple ID, you need to use your new sign-in information with all Apple services that you use.
If you can’t change your Apple ID
You can change your Apple ID to any other email address you control, as long as it’s not already in use as an Apple ID. If your email address ends with @icloud.com, @me.com, or @mac.com, you might not be able to change your Apple ID. You also won’t see Change Email Address on your account page.
If you want to sign in with a different Apple ID
If you want to change the Apple ID that you use on your iPhone, iPad, or iPod touch—and not change the email address that you use as your Apple ID—follow these steps to sign out, then back in with a different Apple ID.
Post from https://support.apple.com/en-us/HT202667