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Your guide to coverage, signal and staying connected
Our network and coverage
Here at Tesco Mobile, we’re powered by O2’s network, giving you 99% coverage across the UK on 4G. Plus, you can take it to the next level with the roll-out of 5G, meaning an even faster, even more reliable connection. We now have 5G in parts of most major UK towns and cities, as well as lots of smaller towns and villages – so more people can benefit from super speeds, less lag and instant connectivity.
With 3G now switched off, we’re able to focus on upgrading faster, more reliable and energy‑efficient 4G and 5G services.
You can use our coverage checker to check the expected network coverage in your area.
Troubleshooting
Network tools
Even with a great signal, things don't always go to plan. Here's everything you need to help you stay connected.
Make calls and send texts using Wi-Fi when mobile signal is weak - ideal at home or indoors.
Choose your device below for simple step-by-step instructions:
4G Calling helps you to make clearer calls and stay connected in more places, especially when signal is limited.
Choose your device below for simple step-by-step instructions:
If you're in an area with low signal, you can still send messages using mobile data or Wi-Fi.
Choose your device below for simple step-by-step instructions:
Check if there are any known issues or planned work in your area that could be affecting your signal.
You’ll see live updates for calls, texts and data, so you can quickly find out if it’s a network problem or something else.
Find out what coverage you should expect where you are. You can check 4G and 5G availability in your area, so you know whether your signal looks right for your location.
Make calls and send texts using Wi-Fi when mobile signal is weak - ideal at home or indoors.
Choose your device below for simple step-by-step instructions:
4G Calling helps you to make clearer calls and stay connected in more places, especially when signal is limited.
Choose your device below for simple step-by-step instructions:
If you're in an area with low signal, you can still send messages using mobile data or Wi-Fi.
Choose your device below for simple step-by-step instructions:
Check if there are any known issues or planned work in your area that could be affecting your signal.
You’ll see live updates for calls, texts and data, so you can quickly find out if it’s a network problem or something else.
Find out what coverage you should expect where you are. You can check 4G and 5G availability in your area, so you know whether your signal looks right for your location.
Making our network even better
We’re busy improving coverage and performance across the UK. You can see what’s changing near you on our network improvements page.
We’re busy improving coverage and performance across the UK. You can see what’s changing near you on our network improvements page.
Frequently asked questions
You can use our coverage checker to check the expected network coverage in your area, including 2G, 3G, 4G and 5G.
Our coverage checker is based on predictions. While these predictions are mostly accurate, other things can come into play that affect network connections (see the ‘Network connections’ section above). We regularly update our coverage checker to reflect our latest findings.
From time to time, we need to make essential updates to our network, which may cause temporary service disruptions. You can use our status checker to check if there are any updates taking place in your area.
If your phone isn’t connecting to 4G, this may be because your phone isn’t 4G-ready. You can check if your phone is 4G-ready by heading to the Device help section.
If your phone is 4G-ready, but it’s not connecting to 4G, you may need to update your phone settings to connect to 4G. For help with this, please head to our Device help section.
If your phone still isn’t connecting to 4G after this, this may be because there’s a temporary issue with the 4G coverage in your area. Or you may be in an area that doesn’t have 4G coverage (although 99% of the UK is covered by our 4G service).
Need a hand?
Visit your local Phoneshop
Need a hand?
Visit your local Phoneshop
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