To be able to deliver an order it is very important that we don’t miss crucial customer information. Missing information may result in an order being cancelled. Test link
The following settings are required to ensure that your customers get delivery notifications and receive what they have ordered from your store. Make sure that the following customer information is set as ‘Mandatory’ in your Shopify store:
Phone number
Name
E-mail
5 Steps
In your Shopify admin, navigate to Settings>Checkout.
In the Customer contact method section, on Select what contact method customers use to check out select Email.
In the Customer information section, set Require first and last name.
Scroll down in and set Shipping address phone number to required as well.