T-Mobile vs Xfinity (Comcast)
Full speed comparison based on 2,025 verified measurements.
T-Mobile
167 Mbps
31 Mbps
58 ms
Xfinity (Comcast)
WINNER351 Mbps
83 Mbps
32 ms
Speed Difference Summary
Download difference
184 Mbps
Xfinity (Comcast) is faster
Upload difference
52 Mbps
Xfinity (Comcast) is faster
Ping difference
26 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 2,025 verified speed tests from T-Mobile and Xfinity (Comcast) customers, Xfinity (Comcast) delivers faster average speeds.
T-Mobile averages 167 Mbps download with 31 Mbps upload and 58 ms ping. Xfinity (Comcast) averages 351 Mbps download with 83 Mbps upload and 32 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.