Cell Coverage in Coulsdon, England

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Performance by Carrier in Coulsdon

Compare real-world download speeds, upload performance, and latency for major carriers in Coulsdon — based on millions of crowdsourced speed tests to help you find the fastest, most reliable network.

EE logo
Down
14.9Mbps
Up
2.5Mbps
Reliab.
3.8/ 10

18 tests conducted

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O2 logo
Down
9.6Mbps
Up
4.7Mbps
Reliab.
0.0/ 10

Less than 10 tests conducted

View Carrier
Three logo
Down
88.9Mbps
Up
1.9Mbps
Reliab.
0.0/ 10

Less than 10 tests conducted

View Carrier
Vodafone logo
Down
15.1Mbps
Up
0.5Mbps
Reliab.
2.0/ 10

17 tests conducted

View Carrier

These results compare 4 mobile carriers measured in Coulsdon — Three, O2, Vodafone, EE — using median values calculated from crowdsourced speed tests. Each card shows download speed, upload speed, and reliability to give you a complete picture of real-world network performance.

Three delivers the fastest median download at 88.9 Mbps, making it the top performer for raw download throughput. EE ranks highest for reliability with a score of 3.8/10, reflecting consistent connection quality across tests.

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Network Performance

Based on crowdsourced speed tests and signal measurements in Coulsdon, England, get a complete view of mobile performance with area-wide benchmarks and carrier-by-carrier breakdowns. Explore median performance metrics from real-world tests, then compare carriers side-by-side for speed, responsiveness, and availability.

Median Performance

Download

16.6Mbps

Upload

1.2Mbps

Latency

32ms

Reliability

3.4/ 10

Top Performers

Best Download: Three

88.9 Mbps

Best Upload: O2

4.7 Mbps

Best Latency: Vodafone

30 ms

Best Reliability: EE

3.8 / 10

Based on 41 speed tests

Network Performance aggregates all measured carriers in Coulsdon to provide a baseline view of typical speeds and latency in the area. Use these medians as a quick indicator of overall network quality.

These medians are calculated from 41 tests. Current medians are 16.6 Mbps download, 1.2 Mbps upload, and 32 ms latency.

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Cell Coverage in Coulsdon: FAQ

What is the best cell phone carrier in Coulsdon?

Based on crowdsourced speed tests in Coulsdon, Three currently leads in median download speeds. Compare carriers in the performance table above for the latest results.

Why might this page show limited data for Coulsdon?

We need at least 25 recent speed tests to generate reliable local metrics. If we don't have enough tests yet, the page focuses on maps and nearby locations while we keep collecting data.

What is the reliability score?

The reliability score summarizes how dependable mobile performance is in Coulsdon. It uses a 0.0 to 10.0 scale (higher is better) and is calculated from real-world speed test percentiles with weighted components: download (50%), latency (30%), and upload (20%). It evaluates the lower-end experience using the bottom 10%, 5%, and 1% percentiles when enough samples are available. If local speed testing is limited, a coverage-based fallback is used from signal quality distribution (great/good/poor).

How can I check coverage at my specific address in Coulsdon?

Use the interactive map to check signal strength at your exact address. Visit the CoverageMap interactive map to explore 4G/5G availability.

How can I contribute coverage data for Coulsdon?

Download the CoverageMap app and run a few speed tests with location enabled. Your results help improve coverage accuracy and unlock local rankings faster.

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