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.
Unable to place an order with error "Your credit card information is not valid"
How to contact the Blizzard legal department.
Regional or local taxes may apply to your digital purchases
In order to get into the Overwatch Top 500 adding a phone number is required.
Some free games require that you add a phone number to your Battle.net account
What to do if you don't receive texts from Blizzard
A phone number can only be linked to one free game
How to resolve this error when adding a phone number to your Battle.net account