8. Comcast Launches Wireless Service Following months of speculation into its strategy, cable giant Comcast took the plunge into the wireless market with its own service for consumers, Xfinity Mobile. Xfinity Mobile uses a combination of Verizon's 4G LTE network via an MVNO agreement between the two companies, and Comcast's 16 million Wi-Fi hotspots. The service is sold through a bundled offering with the Philadelphia'-based provider's cable, internet and landline voice services, and is a competitive offering that can go head-to-head with wireless offerings from rival carriers AT&T and Verizon, Comcast said.