Belfast
Cell coverage comparison in Belfast, Northern Ireland
Based on crowdsourced speed tests and signal measurements in Belfast, Northern Ireland, the current snapshot reflects over 1,800 speed tests and shows medians of 26.4 Mbps download, 10.3 Mbps upload, and 44 ms latency.
Performance by Carrier in Belfast
Explore median download speeds, upload performance, and network latency for each major mobile carrier in Belfast, 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.
Over 200 tests conducted
Over 400 tests conducted
Over 800 tests conducted
Over 400 tests conducted
Performance by Carrier shows side-by-side results for the primary mobile providers measured in Belfast. Each row reflects median download, upload, and latency for that carrier.
Providers included in this comparison are O2, EE, Three, Vodafone. Per-carrier test counts are shown in the table to indicate data accuracy.
Network Performance in Belfast
Get a complete view of mobile network performance across Belfast with overall benchmarks and carrier-by-carrier breakdowns. Explore median performance metrics calculated from millions of real-world, crowdsourced speed tests. Start with the Belfast-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
Top Performers
Fastest Download: EE
77.4 Mbps
Fastest Upload: Three
18.4 Mbps
Best Latency: O2
39 ms
Network Performance aggregates all measured carriers in Belfast 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 1,800 tests. Current medians are 26.4 Mbps download, 10.3 Mbps upload, and 44 ms latency.
Citys in Belfast
Select a city to view coverage data for that location.
Cell Coverage in Belfast: FAQ
What is the best cell phone carrier in Belfast?
Why might this page show limited data for Belfast?
How can I check coverage at my specific address in Belfast?
How can I contribute coverage data for Belfast?
Download the CoverageMap app and run a few speed tests with location enabled. Your results help improve coverage accuracy and unlock local rankings faster.
Get the appView Coverage Map for Belfast
Explore detailed coverage data on our interactive map to find the best carrier for your specific location.
Open Interactive Map