CoverageMap

Cell Coverage in Swansea, Wales

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Performance by Carrier in Swansea

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

EE logo
Down
80.3Mbps
Up
30.4Mbps
Reliab.
10.0/ 10

44 tests conducted

View Carrier
O2 logo
Down
78.2Mbps
Up
6.8Mbps
Reliab.
6.1/ 10

Over 100 tests conducted

View Carrier
Three logo
Down
307.3Mbps
Up
51.9Mbps
Reliab.
8.7/ 10

17 tests conducted

View Carrier
Vodafone logo
Down
20.4Mbps
Up
4.1Mbps
Reliab.
0.0/ 10

Less than 10 tests conducted

View Carrier

These results compare 4 mobile carriers measured in Swansea — 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 307.3 Mbps, making it the top performer for raw download throughput. EE 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 Swansea, Wales, 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

80.5Mbps

Upload

8.5Mbps

Latency

42ms

Reliability

6.5/ 10

Top Performers

Best Download: Three

307.3 Mbps

Best Upload: Three

51.9 Mbps

Best Latency: Three

37 ms

Best Reliability: EE

10.0 / 10

Based on over 200 speed tests

Network Performance aggregates all measured carriers in Swansea 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 200 tests. Current medians are 80.5 Mbps download, 8.5 Mbps upload, and 42 ms latency.

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Cell Coverage in Swansea: FAQ

What is the best cell phone carrier in Swansea?

Based on crowdsourced speed tests in Swansea, 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 Swansea?

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 Swansea. 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 Swansea?

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 Swansea?

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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