Xfinity Mobile and Spectrum Mobile Outpace Industry Speeds with Wi-Fi-Driven Gains

Comcast and Charter are strengthening their positions in the U.S. wireless market as their respective services – Xfinity Mobile and Spectrum Mobile – continue to outperform traditional mobile-only networks on data speeds. This momentum is largely fueled by Wi-Fi offloading technologies such as PowerBoost and Speed Boost, which enhance performance by shifting traffic onto fixed broadband infrastructure, Ookla said in its report. Speed of Comcast’s Xfinity Mobile and Charter’s Spectrum Mobile From Q1 2023 to Q1 2026, Xfinity Mobile recorded a 4.4x increase in download speeds, rebounding from a slower starting point. Spectrum Mobile also delivered strong gains, with speeds rising 2.7x during the same period. In comparison, the mobile industry achieved 2.6x growth, indicating that cable MVNOs are now consistently staying ahead of the curve. Ookla did not reveal the download speed of rivals of Xfinity Mobile and Spectrum Mobile. Xfinity Mobile and Spectrum Mobile compete with AT&T, Verizon and T-Mobile. A key factor behind this performance is the extensive use of Wi-Fi networks. Both companies report that up to 90 percent of mobile traffic is routed through their fixed broadband systems. This not only reduces reliance on cellular infrastructure but also enables faster and more consistent data delivery in dense urban and suburban environments, Kerry Baker, who leads Ookla’s research and content efforts in North America, said in the Ookla report . However, this hybrid model is not without challenges. Seasonal variations in underlying cellular partner networks still impact performance, particularly in Q2 and Q3. Additionally, deployments of CBRS spectrum in high-traffic zones face physical limitations such as signal attenuation caused by environmental factors. The evolving partnership with T-Mobile – now supporting business customers for both Comcast and Charter – introduces another variable that could influence performance consistency. At the same time, the anticipated merger between Charter and Cox Communications is expected to reshape the competitive landscape. A key question remains how quickly Spectrum Mobile’s Speed Boost capabilities will be extended across Cox Mobile’s footprint. According to media reports, Comcast’s mobile strategy is not driven by heavy standalone wireless capex. Instead, it leverages its existing broadband infrastructure and Wi-Fi network to offload traffic, reducing the need for large mobile network in