T-Mobile vs Xfinity (Comcast)
Full speed comparison based on 1,739 verified measurements.
T-Mobile
196 Mbps
34 Mbps
53 ms
Xfinity (Comcast)
WINNER348 Mbps
80 Mbps
33 ms
Speed Difference Summary
Download difference
152 Mbps
Xfinity (Comcast) is faster
Upload difference
46 Mbps
Xfinity (Comcast) is faster
Ping difference
20 ms
Xfinity (Comcast) has lower latency
By Country
Head-to-head comparison where both ISPs have user data.
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See if your connection matches the T-Mobile or Xfinity (Comcast) average.
How T-Mobile Compares to Xfinity (Comcast)
Based on 1,739 verified speed tests from T-Mobile and Xfinity (Comcast) customers, Xfinity (Comcast) delivers faster average speeds.
T-Mobile averages 196 Mbps download with 34 Mbps upload and 53 ms ping. Xfinity (Comcast) averages 348 Mbps download with 80 Mbps upload and 33 ms ping.
Averages tell only part of the story — actual speeds vary by your specific plan, location, time of day, and whether you use Ethernet or Wi-Fi. Run a speed test on your current connection to see how it compares to both averages before making a switching decision.