Your connectivity is the foundation on which to build your business. Our digital first 5G network gives you the competitive edge in innovation, increased efficiency, and smarter remote working.
According to Ookla, our 5G's the fastest around. [2]
Join a million business customers across all industries who trust us for seamless connectivity.
Voted the UK’s Best Network for Business by the Mobile Industry Awards 2024.
Our combined 4G/5G network covers 99% of the outdoor population.
With 4,700 5G sites across 650 UK towns and cities.
Our customers use 2.4 times more data than the average UK user. [1]
Our network is future-proof. We’re built digital-first from the ground up, partnering with the best in the market to provide a seamless experience. This is best for your business, your team, and most importantly your customers.
We're building capability for high-data traffic, and our unlimited data plans are designed with your business in mind, enabling you to use your data however your business needs it. Enjoy the flexibility to achieve your business goals. All this with the latest technology, and a fully virtualised Cloud Core Network.
As The UK's Fastest 5G network [2], we offer the competitive edge. Our 19 data centres connect teams, clients, and remote customers. This is why so many organisations in the healthcare, construction, and aviation industries have chosen the resilience of our network.
A great business needs efficiency and flexibility. With Three Business roaming solutions, you can stay connected no matter where you are in the world, without going over budget
"For us it was simple: the 5G offering and the price. We chose Three Business first and would not want to move.
Our Three Business connection is fast and reliable, and the Three network is now working better than ever.
I have a point of contact to help me resolve any issues that crop up and flex our connections up and down as needed."
Rob Galkoff, Managing Director at Spotted Bee
New to Three Business? Use the coverage checker below to see if you can access our award-winning 5G network. If you’re already with us, you can use the network status checker to see if we have maintenance going on.
Our 3G network has now been phased out across most of the UK.
We’re not alone in doing this — other networks in the UK and abroad are also phasing out their 3G networks.
Want to find out more about our 3G networks being switched off? Use our coverage checker for information about your local area. For anything else, please go to our 3G switch off page.
Click 3G, 4G, or 5G below to see your coverage
Unavailable
Unfortunately, our 3G network isn't currently available in this area.
You currently have service
Our 3G network has now been phased out across most of the UK. You can use our 3G network for calls, texts and data in this area at the moment, however Three no longer offer a 3G service and the remaining 3G sites are being switched off imminently. This will affect your service if 4G and 5G aren’t available in your area.
You currently have service
Our 3G network has now been phased out across most of the UK. You can use our 3G network for calls, texts and data in this area at the moment, however Three no longer offer a 3G service and the remaining 3G sites are being switched off imminently. This will affect your service if 4G and 5G aren’t available in your area.
You currently have service
Our 3G network has now been phased out across most of the UK. You can use our 3G network for calls, texts and data in this area at the moment, however Three no longer offer a 3G service and the remaining 3G sites are being switched off imminently. This will affect your service if 4G and 5G aren’t available in your area.
Unavailable
Unfortunately, our 4G network isn't currently available in this area.
Yes - Good service
Good news – 4G is in your area. If your device is 4G calling compatible, you’ll have good 4G coverage for calls, texts, and mobile internet.
Yes - Very good service
Great news – 4G is in your area. If your device is 4G calling compatible, you’ll have very good 4G coverage for calls, texts, and mobile internet.
Yes – Excellent service
Great news - 4G is in your area. If your device is 4G calling compatible, you'll have excellent 4G coverage for calls, texts, and mobile internet.
Unavailable
Unfortunately, our 5G network isn't currently available in this area.
Yes – 5G is available
Good news. In most cases, you can use our 5G network for mobile internet, calls, and texts.
Yes – 5G is available
Good news. In most cases, you can use our 5G network for mobile internet, calls, and texts.
Yes – 5G is live
Great news. You can use our super-fast 5G network for mobile internet, calls, and texts.
See if we can offer you our superfast, quick to install Business Broadband.
We estimate that we’ll be switching off a 3G mast here on [dateplaceholder]. So, there may be reduced or no 3G coverage in this area from then onwards. Please check back regularly. Find out more about our 3G switch off.
Please note: The coverage checker map may not accurately reflect switch off in real time. There may be a delay of up to 30 days.
Our 5G coverage map meets Ofcom High Confidence standard. However, although these coverage results are accurate, the information is only a guide and doesn't guarantee service availability in a particular location. Coverage may vary depending on your device and whether you're indoors. We are continuously improving our network to ensure our 5G service reaches even more customers.
We can't provide a status update right now.
Visit our coverage checker to see what coverage would normally be like in your area.
Find more help and advice below.
We hope to have things fixed as soon as possible and will add any updates here.
Visit our coverage checker to see what coverage would normally be like in your area.
Find more help and advice below.
We hope to be finished working on these improvements as soon as possible.
We'll add any further updates here.
As a result, you may experience varying data speeds depending on how many customers are connecting to our network via your closest mast.
We’re always working to improve our network and aim to provide the best experience possible.
See below for other factors that may affect your signal.
Visit our coverage checker to see what coverage would normally be like in your area.
We'll add any further updates here.
We hope to be finished working on these improvements as soon as possible.
We'll add any further updates here.
Unfortunately, no network can tell you how strong your signal will be indoors. That's because the signal strength needed to pass through walls and windows varies from building to building.
Your SIM card, phone settings, a low battery, and running older software can all affect the signal. If your account is on hold, that will also prevent use of the network.
The closer you are to a mast, the stronger your signal. It can also be affected by geographical things, like hills, valleys, forests, etc.
Strong winds, flooding, storms, falling trees, etc. can all affect phone masts.
Cranes or scaffolding, for example, can obstruct the signal.
When we're carrying out planned or unplanned maintenance, your signal will probably be affected.
We’ve now phased out our 3G network across most of the UK. You may have reduced 3G coverage or no 3G coverage at all. If you’re using a device compatible with 4G Calling, you’ll be able to access our 4G network where it’s available.
They're the 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.
Our 5G Business Broadband hub could get you online as soon as tomorrow, with unlimited data. No landline. No engineer. No waiting - just plug in and work. It's broadband, but better.
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.
Based on analysis by Ookla® of Speedtest Intelligence® data for Q1-Q2 2024. Ookla trademarks used under license and reprinted with permission.
