Northern Ireland

Cell coverage comparison in Northern Ireland, United Kingdom

Based on crowdsourced speed tests and signal measurements in Northern Ireland, United Kingdom, the current snapshot reflects 47 speed tests and shows medians of 34.4 Mbps download, 3.5 Mbps upload, and 60 ms latency.

Performance by Carrier in Northern Ireland

Explore median download speeds, upload performance, and network latency for each major mobile carrier in Northern Ireland, 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.

DownDownload25.7 Mbps

UpUpload9.7 Mbps

Reliab.Reliability0.0 / 10

Less than 10 tests conducted

View Carrier

DownDownload33.9 Mbps

UpUpload8.8 Mbps

Reliab.Reliability0.0 / 10

Less than 10 tests conducted

View Carrier

DownDownload34.5 Mbps

UpUpload3.5 Mbps

Reliab.Reliability4.1 / 10

19 tests conducted

View Carrier

DownDownload52.2 Mbps

UpUpload2.6 Mbps

Reliab.Reliability7.4 / 10

18 tests conducted

View Carrier

Performance by Carrier shows side-by-side results for the primary mobile providers measured in Northern Ireland. 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 Northern Ireland

Get a complete view of mobile network performance across Northern Ireland with overall benchmarks and carrier-by-carrier breakdowns. Explore median performance metrics calculated from millions of real-world, crowdsourced speed tests. Start with the Northern Ireland-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

34.4Mbps

Upload

3.5Mbps

Latency

60ms

Reliability

6.1/ 10

Top Performers

Best Download: Vodafone

52.2 Mbps

Best Upload: EE

9.7 Mbps

Best Latency: Vodafone

45 ms

Best Reliability: Vodafone

7.4 / 10

Based on 47 speed tests

Network Performance aggregates all measured carriers in Northern Ireland 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 47 tests. Current medians are 34.4 Mbps download, 3.5 Mbps upload, and 60 ms latency.

Browse by Local Government Districts

Select one of the local government districts to view coverage data for that area.

Antrim and Newtownabbey

Ards and North Down

Armagh, Banbridge and Craigavon

Belfast

Causeway Coast and Glens

Derry and Strabane

Fermanagh and Omagh

Lisburn and Castlereagh

Mid and East Antrim

Mid Ulster

Newry, Mourne and Down

Cell Coverage in Northern Ireland: FAQ

What is the best cell phone carrier in Northern Ireland?

Based on crowdsourced speed tests in Northern Ireland, Vodafone 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 Northern Ireland?

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 Northern Ireland. 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 Northern Ireland?

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 Northern Ireland?

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 app

Check Coverage at Your Exact Location

Use our interactive coverage map to see detailed signal strength data for any address in Northern Ireland.

Open Interactive Map