A Mobile Virtual Network Operator (MVNO) is a company that provides mobile phone services without owning its own wireless network infrastructure. Instead, MVNOs lease network access from larger carriers, such as Verizon or AT&T, allowing them to offer their own plans and services to customers. MVNOs often focus on specific market segments, providing competitive pricing or unique features. They can cater to niche audiences, such as budget-conscious consumers or those seeking specialized services, while still relying on the established networks of major carriers for connectivity.