* Expedited shipping carrier requires that the customer provide a phone number to complete the delivery, then the phone number can be set to Required. If you are using Shopify as your sales channel, from your Shopify admin, go to Settings > Checkout. In the Form options section, set the Shipping address phone number is Required then click Save
Reasons that choose Shopify
Rich E-commerce tools
Shopify providing a lots of tools to help selling products online, You can connect your Etsy an Amazon seller account with Shopify account, in other words, you can sell the products in multiple channels.
There is many way to organize your products into multiple collections and listing, this help you get better AD performance, it's really useful for your online selling business.
You can install Shopify apps to help you build your business, integrate with external services, and add features to your Shopify admin. find the app from the store that’s right for yours.