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Mobile phone coverage across the UK

Mobile phone coverage in Wales

By Hamse Yusuf

Article 6 of 6

New data from Which? and RootMetrics uncovers the reality of 4G coverage throughout the UK. Find out what it's really like in Wales and see which provider has the best 4G network.

Put us to the test

Our Test Labs compare features and prices on a range of products. Try Which? to unlock our reviews. You'll instantly be able to compare our test scores, so you can make sure you don't get stuck with a Don't Buy.

If you live in Wales and wondered whether your mobile network has the best signal, our guide has got you covered.

Below, you can see the most recent network reliability and network speed scores for Wales, based on data from our partner, RootMetrics.

You can also use our mobile coverage map for a more granular analysis of where you live.

Best network for mobile signal experience in Wales

A new report by RootMetrics has found that EE and Vodafone mobile phone users in Scotland had the best mobile signal experience. Vodafone just edged EE, achieving the highest RootScore of 94.6. EE got a RootScore of 93.7 with Three also getting a score in the 90s.

O2 achieved the lowest score with a respectable 89.6 in RootMetrics testing.

Find out which network is the best where you live with our free coverage checker.

Best network for download speeds in Wales

EE had the highest average download speeds in Wales, clocking in at 35.7Mbps and was followed close behind by Vodafone, which averaged 33.5Mbps

O2 and Three lose out in the testing offering well below the speeds EE and Vodafone attained. O2 recorded the lowest average download speed with 13.1Mbps with Three not performing much better, recording an average download speed of 14.8Mbps

Our analysis

The information used in this analysis comes from a regular collaboration between Which? and coverage experts RootMetrics, and is based on over 580,000 measurements taken from multiple outdoor and indoor locations .

Using these measurements, we're able to give a definitive account of the real mobile phone user experience using RootScores. A RootScore is a simple way to translate all the data gathered into clear and easy-to understand marks of performance and is scaled from 0-100. The higher the score, the better.

Read more about the approach, and download the free app, on the RootMetrics website.

Which network do you say is best?

Once you know which networks offer the best coverage where you live and work, you'll want to know which ones offer the best customer service and value for money. We asked 6,100 members of the public to tell us about what they love and hate about their network.

Read the results of our best mobile networks survey to find out the winners and the losers.

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