Is T-Mobile or Xfinity (Comcast) faster?

Based on 1,123 verified speed tests, Xfinity (Comcast) is faster overall. T-Mobile averages 188 Mbps download, Xfinity (Comcast) averages 349 Mbps download.

What is the average speed difference between T-Mobile and Xfinity (Comcast)?

The average download speed difference is 161 Mbps. Upload speed difference is 53 Mbps. Ping difference is 21 ms.

Should I choose T-Mobile or Xfinity (Comcast)?

It depends on your use case. Xfinity (Comcast) offers faster average speeds, but actual performance varies by location and plan. Test your current connection and compare to both averages before switching.

T-Mobile vs Xfinity (Comcast)

Full speed comparison based on 1,123 verified measurements.

Overall Winner: Xfinity (Comcast)

T-Mobile

Download

188 Mbps

Upload

35 Mbps

Ping

53 ms

Based on 342 measurements · Full T-Mobile stats →

Xfinity (Comcast)

WINNER

Download Wins

349 Mbps

Upload Wins

88 Mbps

Ping Wins

32 ms

Based on 781 measurements · Full Xfinity (Comcast) stats →

Speed Difference Summary

Download difference

161 Mbps

Xfinity (Comcast) is faster

Upload difference

53 Mbps

Xfinity (Comcast) is faster

Ping difference

21 ms

Xfinity (Comcast) has lower latency

By Country

Head-to-head comparison where both ISPs have user data.

United States Xfinity (Comcast) wins

T-Mobile 189 Mbps (340 tests)

Xfinity (Comcast) 349 Mbps (781 tests)

Test your own speed

See if your connection matches the T-Mobile or Xfinity (Comcast) average.

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How T-Mobile Compares to Xfinity (Comcast)

Based on 1,123 verified speed tests from T-Mobile and Xfinity (Comcast) customers, Xfinity (Comcast) delivers faster average speeds.

T-Mobile averages 188 Mbps download with 35 Mbps upload and 53 ms ping. Xfinity (Comcast) averages 349 Mbps download with 88 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.

T-Mobile speed Xfinity (Comcast) speed All ISPs Country speeds