Cardiff
Cell coverage comparison in Cardiff, Wales
Based on crowdsourced speed tests and signal measurements in Cardiff, Wales using data from Vale of Glamorgan (Bro Morgannwg), the current snapshot reflects over 1,900 speed tests and shows medians of 541.7 Mbps download, 24.0 Mbps upload, and 23 ms latency.
Not enough data for Cardiff
Showing performance data for Vale of Glamorgan (Bro Morgannwg) instead. We need at least 25 speed tests in Cardiff to generate local metrics.
Performance by Carrier in Vale of Glamorgan (Bro Morgannwg)
Explore median download speeds, upload performance, and network latency for each major mobile carrier in Vale of Glamorgan (Bro Morgannwg), 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.
84 tests conducted
Over 1,800 tests conducted
11 tests conducted
Performance by Carrier shows side-by-side results for the primary mobile providers measured in Vale of Glamorgan (Bro Morgannwg). Each row reflects download, upload, latency, and reliability for that carrier.
Providers included in this comparison are EE, O2, Three, Vodafone. Per-carrier test counts are shown in the table to indicate data accuracy.
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Network Performance in Vale of Glamorgan (Bro Morgannwg)
Get a complete view of mobile network performance across Vale of Glamorgan (Bro Morgannwg) with overall benchmarks and carrier-by-carrier breakdowns. Explore median performance metrics calculated from millions of real-world, crowdsourced speed tests. Start with the Vale of Glamorgan (Bro Morgannwg)-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
Upload
Latency
Reliability
Top Performers
Best Download: Three
552.1 Mbps
Best Upload: Three
25.2 Mbps
Best Latency: Three
22 ms
Best Reliability: Vodafone
10.0 / 10
Network Performance aggregates all measured carriers in Vale of Glamorgan (Bro Morgannwg) to provide a baseline view of typical speeds and latency in the area. Use these medians as a quick indicator of overall network quality.
Local testing in Cardiff is limited, so these medians are based on data from Vale of Glamorgan (Bro Morgannwg). Current medians are 541.7 Mbps download, 24.0 Mbps upload, and 23 ms latency.
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Cell Coverage in Cardiff: FAQ
What is the best cell phone carrier in Cardiff?
Why might this page show limited data for Cardiff?
What is the reliability score?
How can I check coverage at my specific address in Cardiff?
How can I contribute coverage data for Cardiff?
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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