The study analyzes the telecom company Ericsson’s supply model, named Mobile Inventory by the author, focusing on the customer’s point of view. Mobile Inventory involves specially designed carts with electronic components required for production that circulate between a third-party logistics provider (3PLP) and Ericsson. The carts are transported by trucks and rolled out close to the assembly line at Ericsson, where they work as production storage sites. The inventory level inside the cart is kept at a certain maximum level, which covers the requirements until a new cart is delivered. The supply model works without a traditional purchase ordering process, operating instead as a variant of a periodic ordering system with fixed delivery days and where the 3PLP is responsible for the replenishment of the carts. The system runs to a large extent by itself. Mobile Inventory could be an uncomplicated supply model for manufacturing companies to manage some of their products like noncritical/standard and leverage parts, demanding only limited resources and providing a high level of customer service. This study intends to increase the knowledge of an alternative approach for materials supply that could be applied to manufacturing companies other than Ericsson.