Comcast's Xfinity Mobile and Charter's Spectrum Mobile released their latest quarterly number for subscriber additions, both of which are summed up nicely in a May 1 FierceWireless article by Linda Hardesty:
Comcast added 355,000 net wireless lines in its first quarter 2023. During the same quarter, Charter added a whopping 686,000 Spectrum Mobile lines — an indication that its 12-month Spectrum One bundled promotion is paying off in garnering new subscribers.
Comcast now counts 5.7 million lines for its mobile virtual network operator (MVNO) service, while Charter counts 6 million total lines.
A May 10 FierceWireless article by the same author also calls attention to Spectrum Mobile’s sharing of Wi-Fi networks with Xfinity mobile as well as other Wi-Fi network partners. It is reported that about 85% of Spectrum Mobile’s data traffic is carried on Wi-Fi and the remainder is carried on Verizon Wireless’s cellular network pursuant to an MVNO agreement. And Spectrum Mobile is now beginning to put some of Charter’s CBRS (3.5 GHz) spectrum into use in order to reduce further its dependency on third party-cellular networks.
Although cable wireless MVNO subscribership is still small compared to that of mobile cellular wireless providers such as AT&T, T-Mobile, Verizon, C-Spire, and US Cellular, cable wireless MVNOs offer consumers a strong facilities-based competitive choice for mobile wireless broadband services. The continued growth of cable MVNOs also is a testament to private innovation and investment as well as the importance of making more spectrum available for commercial uses, both on a licensed and on an unlicensed basis.
The competitive state of the broadband marketplace is the subject of my Perspectives from FSF Scholars from January of this year: "The 2022 Communications Marketplace Report: Timely FCC Action Could Accelerate Next-Gen Broadband Deployment."