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BT 4G Coverage and Network Review

29th January 2019

BT Network Coverage

BT uses EE's 4G network (which it now also owns), so you can look at that to see its level of coverage. That's a good thing, as EE has 4G available in thousands of towns, cities and villages.

EE – and by extension BT - has over 99% UK population coverage, so there's almost nowhere you won't get 4G. The network also has around 91% of the UK geographically covered.

Those are some great stats, but there’s more to a network than its coverage and there are reasons you might want to choose BT over EE, or any other network, as well as some reasons you might want to think twice.

Read on for a full rundown and review of BT Mobile, including the areas where it excels and those where there’s room for improvement.




High speeds

No Pay As You Go plans

Allows tethering

No inclusive roaming beyond the EU

Good 4G coverage

No unlimited data plans

Our Rating


BT Coverage

Network Type

Coverage by population







BT Mobile uses the same core network as EE, giving it excellent coverage across the UK with 99, 98 and 99 per cent 4G, 3G and 2G coverage respectively. That puts it in a strong position when it comes to coverage, but you also benefit from access to BT's WiFi hotspots across the UK.

Use BT’s coverage checker above to find out more about BT coverage in your area, including signal strengths and details on both indoor and outdoor coverage.

4G Network Coverage Comparison


4G Coverage by population

BT Mobile (EE Network)








As you can see in the coverage comparison above, BT is ahead of rivals, other possibly than Three, but not by much, as Vodafone and O2 both have almost as much 4G population coverage.

Locations with 4G coverage include but are not limited to the following cities:

Aberdeen, Armagh, Bangor, Bath, Belfast, Birmingham, Bradford, Brighton, Bristol, Cambridge, Canterbury, Cardiff, Carlisle, Chelmsford, Chester, Chichester, Coventry, Derby, Derry, Dundee, Durham, Edinburgh, Ely, Exeter,  Glasgow, Gloucester, Hereford, Inverness, Kingston upon Hull, Lancaster, Leeds, Leicester, Lichfield, Lincoln, Lisburn, Liverpool, London, Manchester, Newcastle, Newport, Newry, Norwich, Nottingham, Oxford, Peterborough, Peterlee, Perth, Plymouth, Portsmouth, Preston, Ripon, Sheffield, Southampton, St Albans, St Asaph, St David’s, Salford, Salisbury, Stirling, Stoke, Sunderland, Swansea, Truro, Wakefield, Wells, City of Westminster, Winchester, Wolverhampton Worcester and York.

Network Speeds and Frequencies

BT mostly uses standard 4G, which is roughly 5 times faster than a standard 3G network. However, it also has an Extra Speed service as an optional extra, which reaches speeds of up to 60Mbit/sec.

OpenSignal – Mobile Networks Update, October 2018


4G download speeds

4G latency (ms)

BT Mobile (EE Network)












According to an OpenSignal report from October 2018, EE’s average 4G download speed is 28.9Mbps. BT’s isn’t part of the report, but it’s likely to be similar to EE’s, meaning it’s probably higher than any major rival.

EE’s average latency meanwhile is 39.77ms. That’s the measure of how long the network takes to respond to a request, so a lower number is better here, and EE (and likely by extension BT) is once again in the lead.

Speedtest – Mobile Speedtest Data, Q3-Q4 2017


Download/upload speeds

BT Mobile (EE Network)








In a Speedtest report from 2017 EE (and therefore likely BT) was again found to be the fastest, with average download speeds of 28.80Mbps and average upload speeds of 9.29Mbps.

BT Mobile Network Frequencies


Frequency Band



Band 20



Band 3

2G & 4G


Band 1

3G & 4G


Band 7


BT Mobile uses the 800MHz band, 1800MHz band, 2100MHz band and 2600MHz band for 4G. The 800MHz band is long range, making it a great fit for countryside locations, but it can also penetrate walls, for good indoor coverage.

The 2600MHz band on the other hand is shorter range but higher capacity, which means it can deal well with congested areas like inner cities. The 1800MHz and 2100MHz bands are somewhere in the middle.

For more in depth information, check out our 4G frequencies guide.

Planned improvements

BT through EE is doing various improvement work, with a recent example being updating more than 500 3G towers to 4G. Most of these towers are in London, Birmingham, Manchester, Bristol, Exeter, Hull, Nottingham, Edinburgh, Glasgow, Cardiff and Belfast.

Traffic management

BT Mobile doesn’t have any speed restrictions, no matter how much you upload or download, even at peak hours. BT Mobile also won’t slow down peer to peer file-sharing, so you’re free to use the network however and whenever you want without being slowed.


BT Mobile offers a range of Pay Monthly and SIM Only Plans, which are detailed below. Note that they all include free use of BT’s Wi-Fi hotspots, and many of them support Family SIM, which lets you add additional SIM cards to the contract at a reduced price, each with its own data, and each additional one only being tied into a 30-day contract.

All of BT’s plans come with 4G at no extra cost.

BT Mobile Pay Monthly Plans


Mobile Phones

SIM Only

Plans Available

Max Data



Contract lengths

24 months

12 months

EU Roaming

Global Roaming



WiFi Calling

Data Rollover

Spending Caps

Free BT Sport on mobile

✔* ✔*


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* On plans with 6GB data and higher

BT Mobile’s Pay Monthly plans are all 24 months long and all allow you to use your data allowance towards tethering. You can get up to 60GB of monthly data with Pay Monthly plans.

BT’s SIM Only plans are all 12 months long and come with up to 40GB of monthly data. As with Pay Monthly, you can use any or all of that data for tethering.

Highlights of BT Mobile’s plans include free access to BT Sport on Pay Monthly plans with 6GB of data or more, and discounts if you’re a BT Broadband customer. There are also extras, detailed below, however data limits are middling.

BT also offers Data Only plans. These come on 12-month contracts with up to 30GB of data.

Pay As You Go

BT Mobile doesn’t currently offer any Pay As You Go plans.

BT Extra Speed

BT's Extra Speed service is available as an optional add-on (though it comes as standard with some plans), doubling 4G speeds to up to 60Mbps. It's available in many of the same places as standard 4G. This is the equivalent of EE’s double speed service and isn’t as fast as EE’s 4G+.


BT Mobile lets you use as much of your monthly data allowance as you want for tethering, so you can get tablets, laptops and other devices online by sharing your phone’s network connection. The only limit is your data allowance.

WiFi Calling

Wi-Fi Calling refers to the act of calling and texting over a Wi-Fi network, while using your normal number, dialler and SMS app, so it’s completely seamless. BT Mobile offers this to all new and existing customers, but currently you need an iPhone 5S or later, or a select Android handset, including the Samsung Galaxy S9, Samsung Galaxy S9 Plus or Samsung Galaxy A8 (2018).


VoLTE stands for Voice over LTE (sometimes called 4G Calling) and lets you make and receive calls over 4G, so you’ll be able to stay in touch in places that don’t have a 2G or 3G signal. BT Mobile offers this to all customers, but at the moment it only works on the iPhone 6 or later, or a small number of Android phones, including the Samsung Galaxy S9, Samsung Galaxy S9 Plus, Huawei P Smart and others, bought from BT Mobile.

Roaming Destinations

BT Mobile lets you use your full allowance of minutes and texts at no extra cost in 47 European destinations. You can also use your data, but above 15GB a surcharge may be applied. The applicable destinations are as follows:

Austria, Belgium, Bulgaria, Canary Islands, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, French Guiana, Germany, Gibraltar, Greece, Guadeloupe, Guernsey, Hungary, Iceland, Ireland, Isle of Man, Italy, Jersey, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Martinique, Mayotte, Monaco, Netherlands, Norway, Poland, Portugal (Incl. Azores & Madeira), Reunion, Romania, Saint Barthelemy, Saint Martin, San Marino, Slovakia, Slovenia, Spain, Sweden, Switzerland, and Vatican City.

Customer service

While hard to judge conclusively, two reports suggest that BT Mobile’s customer service may leave something to be desired.

In the Which? H1 2017 UK Mobile Network Survey, which polled 4,026 members of the public, BT Mobile was rated 8th overall, with a customer score of 63% and a customer service rating of 2 stars (out of 5). It additionally got 3 stars for ease/speed of contacting and value for money, and 2 stars for incentives.

Meanwhile, in an Ofcom complaints report from Q3 2017, BT Mobile was found to have got 9 complaints for every 100,000 customers. That might not sound like many, but only Vodafone performed worse, with 10 complaints per 100,000, while the industry average is just 5.


By leveraging the power of EE’s infrastructure BT has one of the fastest 4G networks around – especially if you opt for its Extra Speed service. But it’s also got benefits of its own, such as free access to BT’s extensive network of Wi-Fi hotspots, along with Wi-Fi Calling and 4G Calling on select handsets.

Its offerings feel slightly limited, as there’s no Pay As You Go. BT also isn’t as competitive for roaming as some rivals, and its customer service record doesn’t look great, but if you’re happy to have a contract and will mostly be using your phone in the UK it’s a strong option.

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