Coverage checker

New to Three? Use our coverage checker below to see if you can access our award-winning network. If you’re already with us, you can use our Network Status checker to see if we have maintenance going on.

Important

We’re phasing out our 3G network and aim to switch it off by the end of 2024. 

We’re not alone in doing this – other networks in the UK and abroad are in the process of phasing out their 3G service, too. 

Want to find out more about our 3G switch off? Head to our 3G switch-off page. For specific information about your local area, please use our coverage checker below. 

Check coverage in your area

Types of mobile coverage: explained

What's the difference between 3G, 4G, and 5G? Well, they're the 3rd, 4th and 5th generations of mobile network. The main difference between them is the speeds they can reach, with each generation hitting faster speeds as they go along. This affects how smooth your online experience is.

How about Home Broadband?

Our 4G and 5G Home Broadband hubs can get you online as soon as tomorrow, all with unlimited data. No landline. No engineer. No waiting. It's broadband, but better.

How about Home Broadband?

Our 4G and 5G Home Broadband hubs can get you online as soon as tomorrow, all with unlimited data. No landline. No engineer. No waiting. It's broadband, but better.

Take a look around

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What affects mobile coverage and how can I improve mine?

Location’s usually the main thing that affects coverage – if you’re far away from a mast, your signal will be weaker. 

But coverage can also be affected by things like trees, being in a basement or underground, travelling, and even your phone itself. Getting higher up, opening windows, and upgrading your phone can all help improve your signal.

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You can chat to us in a number of different ways. Go to our contact us page to find out more.

Frequently asked questions

If you’re having problems with your signal, there are a couple of things you can try. We have a handy Network Status checker which lets you know if there are any issues or planned maintenance in your area. Or you can check our network troubleshooting steps for your device.

There can be a few reasons why you can’t get connected. We’d recommend checking our Network Status checker for any issues or planned maintenance in your area first. Then following our troubleshooting steps under Problems with internet on our Network Status checker page.

Our Network Status checker shows any known issues or planned maintenance in your area.

5G is the fifth generation of mobile network and delivers a massive leap forward in both speed and quality. We’re talking super-fast streaming, lag-free gaming, and lightning quick downloads.

You can check if your area has access to our 4G or 5G network by searching your postcode in our Coverage checker above. Or you can use our Network Status checker to see if there are any issues or planned maintenance in your area.

No, we don’t have a 2G network. And like other networks both here in the UK and abroad, we’re phasing out 3G. We want you to have the best experience on our network, so we’re continuing to invest in our 4G and 5G networks. 

Using an older phone? To stay connected, you’ll need to upgrade to a device that’s 4G Calling or 5G compatible.

If you’re with Three UK and travel to the Republic of Ireland, you can use our Go Roam services while you’re there. If you’re permanently based in the Republic of Ireland, get connected to Ireland’s fastest mobile network – Three Ireland.

If you’re with Three UK and are travelling to a Go Roam in Europe destination, you can stay connected while you’re abroad. Remember to check which Go Roam destinations are covered before you go.

Our 4G network covers 99% of the UK population (outdoor coverage), and according to Ookla*, our 5G is the fastest around. Check which network you can get using our Coverage checker above. Or, if you’re already with us, use our Network Status checker for any issues or planned maintenance in your area. 

* Fastest 5G based on Ookla® Speedtest Intelligence® data Q1 – Q2 2023. Verify at https://www.speedtest.net/awards/fastest-5g.

Based on analysis by Ookla® of Speedtest Intelligence® data for Q1-Q2 2023. Ookla trademarks used under license and reprinted with permission.

Visit speedtest.net/awards/fastest-5g to find out more. See three.co.uk/bignetwork.