Shopping cart follow-up by phone refers to the practice of contacting customers who have abandoned their online shopping carts via telephone in order to encourage them to complete their purchase. This proactive approach allows businesses to address any concerns or obstacles that may have prevented the customer from completing their transaction, and can often result in increased sales and customer satisfaction. By reaching out to customers directly, shopping cart follow-up by phone adds a personal touch to the online shopping experience and can help businesses build stronger relationships with their customers.