Need to update the phone number on your Battle.net account?
Use this page if you wish to change or modify your Contact and Shipping address for your Battle.net Account.
How to resolve the error "The phone number is invalid" or "Please enter a post-paid number" when adding a phone number to your Battle.net account
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Troubleshooting steps for communication and transmission errors.
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How to resolve this error when trying to log in to Battle.net
Information about this error when adding a phone number or an Authenticator to a Battle.net account.
What to do if the website returns "Connection Error" when adding a phone number