How to check if phone number already exist?

Question

Is there a way to validate a phone number has already been used by customer programmatically?

Answer 1

You need to override the Magento\Customer\Model\AccountManagement.php class and then need to override createAccountWithPasswordHash method of the class.

also need to override below file

vendor\magento\module-customer\view\frontend\templates\form\register.phtml