Cell Coverage in Northolt, England

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Performance by Carrier in Northolt

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

EE logo
Down
215.9Mbps
Up
8.6Mbps
Reliab.
0.0/ 10

Less than 10 tests conducted

View Carrier
O2 logo
Down
40.6Mbps
Up
1.1Mbps
Reliab.
6.5/ 10

65 tests conducted

View Carrier
Three logo
Down
420.9Mbps
Up
47.2Mbps
Reliab.
10.0/ 10

81 tests conducted

View Carrier
Vodafone logo
Down
11.9Mbps
Up
0.2Mbps
Reliab.
0.0/ 10

Less than 10 tests conducted

View Carrier

These results compare 4 mobile carriers measured in Northolt — 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 420.9 Mbps, making it the top performer for raw download throughput. Three ranks highest for reliability with a score of 10.0/10, reflecting consistent connection quality across tests.

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Network Performance

Based on crowdsourced speed tests and signal measurements in Northolt, 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

298.0Mbps

Upload

34.8Mbps

Latency

22ms

Reliability

8.9/ 10

Top Performers

Best Download: Three

420.9 Mbps

Best Upload: Three

47.2 Mbps

Best Latency: Three

20 ms

Best Reliability: Three

10.0 / 10

Based on over 100 speed tests

Network Performance aggregates all measured carriers in Northolt 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 over 100 tests. Current medians are 298.0 Mbps download, 34.8 Mbps upload, and 22 ms latency.

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Cell Coverage in Northolt: FAQ

What is the best cell phone carrier in Northolt?

Based on crowdsourced speed tests in Northolt, 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 Northolt?

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 Northolt. 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 Northolt?

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 Northolt?

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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