Coulsdon

Cell coverage comparison in Coulsdon, England

Based on crowdsourced speed tests and signal measurements in Coulsdon, England, the current snapshot reflects 41 speed tests and shows medians of 16.6 Mbps download, 1.2 Mbps upload, and 32 ms latency.

Performance by Carrier in Coulsdon

Explore median download speeds, upload performance, and network latency for each major mobile carrier in Coulsdon, calculated from millions of real-world, crowdsourced speed tests. These results reflect typical everyday performance to help you compare carriers and choose the network that delivers the fastest speeds, most responsive connections, and broadest coverage where you live, work, and travel.

DownDownload14.9 Mbps

UpUpload2.5 Mbps

Reliab.Reliability3.8 / 10

18 tests conducted

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DownDownload9.6 Mbps

UpUpload4.7 Mbps

Reliab.Reliability0.0 / 10

Less than 10 tests conducted

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DownDownload88.9 Mbps

UpUpload1.9 Mbps

Reliab.Reliability0.0 / 10

Less than 10 tests conducted

View Carrier

DownDownload15.1 Mbps

UpUpload0.5 Mbps

Reliab.Reliability2.0 / 10

17 tests conducted

View Carrier

Performance by Carrier shows side-by-side results for the primary mobile providers measured in Coulsdon. Each row reflects download, upload, latency, and reliability for that carrier.

Providers included in this comparison are O2, Three, Vodafone, EE. Per-carrier test counts are shown in the table to indicate data accuracy.

Network Performance in Coulsdon

Get a complete view of mobile network performance across Coulsdon with overall benchmarks and carrier-by-carrier breakdowns. Explore median performance metrics calculated from millions of real-world, crowdsourced speed tests. Start with the Coulsdon-wide snapshot to understand overall network trends, then dive deeper to compare individual carriers side-by-side and see how each performs in 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.

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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