The default Magento 2 store offers customer account configuration settings that can be used for multiple purposes like new account options, email options, password options, name and address options such as show gender, the number of lines in the street address, add date of birth in registration form, etc. Magento 2, by default, offers an option to collect the customers’ fax number details. However, it is up to the store admin to show fax field in Magento 2 store, store credit options, login options, captcha for security, and many more.
One of the options that I am posting here is to show telephone in customer account in Magento 2. The telephone number is required to contact the customer in case of any issues in payments, shipping, give them special offers, or a part of any of your discount schemes, or even simply for, customer communication!
In addition to showing telephone number, another important option for businesses is to show Tax/VAT Number in Registration Form, which can aid in better communication and build trust by providing transparent pricing and complying with tax regulations in Magento 2.
Check the below steps to enable Magento 2 telephone validation in customer registration as per the business requirements:
Steps to Enable Magento 2 Telephone Validation in Customer Registration:

- Login to Magento 2 admin panel
- Navigate to Stores > Configuration
- Under Customer, select Customer Configuration
- Expand Name and Address Options
- Set “required” in the field “Show Telephone”
- Save the configuration
That’s it.
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Thank you.