I have not found a solution for this. However, I found a workaround that works if you don't need their email address. You can change the theme settings to change the text of the "email or phone number" field to just say "phone number" so the customer...

Unfortunately, there is no good solution. but, a workaround that we've implemented is changing the label from "email or phone number" to just "phone number" under theme settings.  

Unfortunately, there is no good solution. but, a workaround that we've implemented is changing the label from "email or phone number" to just "primary phone number" under theme settings This takes away the suggestion to enter an email address. But, a...

Unfortunately, there is no good solution. but, a workaround that we've implimented is changing the label from "email or phone number" to just "phone number" under theme settings 

How is this feature not available? Surely there is some customization that can be made as obviously Shopify is not making this a priority. 

I'm having the same issue. I read through the suggested solutions. But, none of them account for requiring phone number for local pickup. I can't believe this isn't possible.

A customer received the following error when checking out that states they are in the wrong zip code to receive local delivery. However, you can see that they in fact have the right zip code (removed any personal info) After troubleshooting the issue...