Yes!
Beginning with Shift4Shop version 9.1.6, merchants can take their store's not completed orders and convert them into Phone Orders for easier completion. Here's how:
Log into your Shift4Shop Online Store Manager.
Using the left navigation menu, go to Orders > Manage Orders.
Typically, the above steps will take you to your store's NEW order status. Along the top of the page, you will see a series of tabs for each status.
3. Click on the Not Completed tab.
4. Locate the order that you'd like to complete and click it to view it.
5. While viewing the order, look towards the top right of the page and click on the Complete button.
These actions will take the order and convert it into a Phone Order, thereby allowing you to complete it more easily (presumably with your customer on the phone).