Click on Behavior tab. Enable the Require Valid Phone Number button, if you would like to require the phone number field to accept only valid phone numbers at your checkout.

You can set up the phone number field to require the input of a valid phone number at your checkout by clicking on the Checkout tab in the menu of your Admi…
Click on Behavior tab. Enable the Require Valid Phone Number button, if you would like to require the phone number field to accept only valid phone numbers at your checkout.
