Mobile network coverage map

Our mobile network quality map can help you find out the strength of signal where you live and work – and how it varies throughout the UK.

Once you've found the network with the best signal in your area, browse the best and worst mobile phone networks in the UK to see which providers have the most satisfied customers.

Mobile network quality map

Enter a postcode below to see the network quality in that area. Quality is shown for each of the big four networks. If you're using a virtual network, you can expect the quality measure to be the same as the parent network indicated below.

• EE: 1p Mobile, BT Mobile, Lycamobile, Spusu, Utility Warehouse
• O2: Giffgaff, Sky Mobile, Tesco Mobile
• Three: Honest Mobile, iD Mobile, Smarty
• Vodafone: Asda Mobile, Lebara, Talkmobile, Voxi

Have a new provider in mind? Our experts have hand-picked the best Sim-only deals on a range of networks.

How to use our mobile network quality map

• How to use Basic mode Enter a postcode that you want to find out about, or scroll around the map and click on an area of interest. 
• How to use Advanced mode Switch to Advanced mode to compare up to five multiple locations. You'll see a comparison table with network performances in these locations, and a combined average score. 
• What’s the difference between network quality and network coverage? The map shows the average quality of network performance that users experience when connected to 4G and 5G networks. Based on ‘how often will it work’, this represents how useful and consistent the signal is. In contrast, a coverage map would just tell you whether or not a network provides coverage in the area, not how good it is. As all networks claim around 99% UK coverage, this isn’t particularly useful.
• What do the percentages mean? The percentage scores represent performance requirements of common mobile applications, such as browsing the internet, streaming videos or making video calls, without major slowdowns or disruptions. Areas where the network has weak or no signal, or where the performance is low, will have a lower percentage score.
• How is the data collected? Opensignal, an independent network analytics company, gathers data using an app downloaded on people’s phones. Data is collected from over one million UK mobile handsets across a 12-month period. The handsets chosen represent a diverse mix of iOS and Android users, across a range of demographics, device types and locations. 
• How often is the coverage map updated? It is updated regularly throughout the year to reflect the latest available data and any changes in network performance. The timing of updates may vary.

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Can mobile providers using the same network have different signal quality?

Based on analysis of more than 20 million results from Opensignal data, in the vast majority of cases, virtual network providers (eg Giffgaff, whose parent network is O2, or Voxi, which uses Vodafone) offer signal quality that's indistinguishable from the parent network. 

In a few cases, certain virtual providers may apply speed restrictions that can impact performance, but network quality should be the same for most people.

Our survey of the best and worst UK mobile networks found that the most common issues mobile customers experience are constantly poor phone signal and continuous brief network dropouts – in fact, no network in our survey received a five-star rating for network reliability. 

Ratings in our survey are based on customer experiences and perceptions, and the fact is, connectivity varies significantly around the country, and quirks of particular areas can have an impact on different users. 

High satisfaction with the overall service could also create a more positive opinion of the network’s technical performance. 

Overall, we recommend using a signal quality map to see how each of the big four networks, and virtual providers that use them, perform in your area. This opens up your options for switching once you've narrowed things down as to who has the best coverage. 

Switching mobile provider can easily be done with just a text message, rather than calling your provider, so there’s no reason to put up with connection issues.

More mobile network coverage maps

You can also use these links to check coverage directly from the telecoms regulator Ofcom and mobile network websites.

• Ofcom mobile coverage checker
• EE coverage and network status checker
• O2 coverage checker 
• Vodafone network status checker
• Three coverage checker

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