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If someone changed the email address on your account, or if you can't remember what it was, we can send you a text to recover your account.Change Your Email Address Self-Service
Change your Battle.net Account email address.Update phone number Hot Topic
Need to update the phone number on your Battle.net Account?
Troubleshooting for error BLZBNTBNA00000015BLZBNTBNA00000012
Troubleshooting for error BLZBNTBNA00000012Input Mapping Game Controls to Unsupported Controllers
Information regarding Blizzard's stance on input mapping, as it relates to game controls