Cell Coverage in Northern Ireland

Loading map...

Performance by Carrier in Northern Ireland

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

EE logo
Down
25.2Mbps
Up
3.6Mbps
Reliab.
0.0/ 10

Less than 10 tests conducted

View Carrier
O2 logo
Down
39.8Mbps
Up
9.9Mbps
Reliab.
0.0/ 10

Less than 10 tests conducted

View Carrier
Three logo
Down
34.4Mbps
Up
3.5Mbps
Reliab.
4.5/ 10

21 tests conducted

View Carrier
Vodafone logo
Down
52.2Mbps
Up
2.6Mbps
Reliab.
7.4/ 10

18 tests conducted

View Carrier

These results compare 4 mobile carriers measured in Northern Ireland — 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.

Vodafone delivers the fastest median download at 52.2 Mbps, making it the top performer for raw download throughput. Vodafone ranks highest for reliability with a score of 7.4/10, reflecting consistent connection quality across tests.

Ad

Network Performance

Based on crowdsourced speed tests and signal measurements in Northern Ireland, United Kingdom, get a complete view of mobile network performance with both 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

32.4Mbps

Upload

3.4Mbps

Latency

58ms

Reliability

7.4/ 10

Top Performers

Best Download: Vodafone

52.2 Mbps

Best Upload: O2

9.9 Mbps

Best Latency: Vodafone

45 ms

Best Reliability: Vodafone

7.4 / 10

Based on 52 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 52 tests. Current medians are 32.4 Mbps download, 3.4 Mbps upload, and 58 ms latency.

Ad

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

Ad

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