Some games require that you add a phone number to your Battle.net account

What to do when you receive an error when adding a phone number to your Battle.net account

Information on Phone Number Not Eligible for Callback error

What to do if you receive this error when attempting to add your phone number to your Battle.net Account.

How to contact the Blizzard legal department.

Information on the sms requirement for Call of Duty

What to do if you don't receive texts from Blizzard

What to do if you corrected your country of residence in your account details but still you can't add your phone number to your account

What to do if you are unable to add your phone number because the wrong country code is showing.

Why does the SMS verification sends the authentication code to a different number