Unlimited mobile broadband

Our comparison helps you compare the latest and best unlimited deals from the leading mobile broadband providers.

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Three 5G Home Broadband Three
Six months half price
£11.00 £22.00 p/m after 6 mths(prices may change during contract)
Six months half price
  • Half price for six months
    First six months at £11 per month. The offer may not immediately appear on the Three website, but should be shown clearly in the basket prior to purchase.
  • Next day delivery
    Next working day delivery available if purchased before 8pm
New customers only30-day money back guaranteeNext working day delivery if purchased before 8pmNo landline or engineer needed
  • 5Gdownload speed
  • Unlimited Monthly usage
  • Zero One-off cost
  • 24 Month Contract
  • No phone line
Six months half price
£11.00 £22.00 p/m after 6 mths(prices may change during contract)
Get Deal
Three 4G Home Broadband Three
Six months half price
£11.00 £22.00 p/m after 6 mths(prices may change during contract)
Six months half price
  • Half price for six months
    First six months at £11 per month. The offer may not immediately appear on the Three website, but should be shown clearly in the basket prior to purchase.
  • Next day delivery
    Next working day delivery available if purchased before 8pm.
New customers only30-day money back guaranteeNext working day delivery if purchased before 8pmNo landline or engineer needed
  • 4Gdownload speed
  • Unlimited Monthly usage
  • Zero One-off cost
  • 24 Month Contract
  • No phone line
Six months half price
£11.00 £22.00 p/m after 6 mths(prices may change during contract)
Get Deal
Three 5G Home Broadband Three
£25.00 per month
New customers only30-day money back guaranteeNext working day delivery if purchased before 8pmNo landline or engineer needed
  • 5Gdownload speed
  • Unlimited Monthly usage
  • Zero One-off cost
  • 1 Month Contract
  • No phone line
£25.00 per month
Get Deal
Vodafone Unlimited Max Dongle or Mobile Wi-Fi Plan Vodafone
order by phone
£30.00 per month(prices may change during contract)
New customers onlyConnect up to 32 devices5G ready
  • 4Gdownload speed
  • Unlimited Monthly usage
  • Zero One-off cost
  • 24 Month Contract
  • No phone line
£30.00 per month(prices may change during contract)
Get Deal
order by phone
Vodafone Unlimited Max Dongle or Mobile Wi-Fi Plan Vodafone
order by phone
£33.00 per month(prices may change during contract)
New customers onlyConnect up to 32 devices5G ready
  • 4Gdownload speed
  • Unlimited Monthly usage
  • Zero One-off cost
  • 12 Month Contract
  • No phone line
£33.00 per month(prices may change during contract)
Get Deal
order by phone
Vodafone Unlimited Max Dongle or Mobile Wi-Fi Plan Vodafone
order by phone
£37.00 per month
New customers onlyConnect up to 32 devices5G ready
  • 4Gdownload speed
  • Unlimited Monthly usage
  • £49.00 One-off cost
  • 1 Month Contract
  • No phone line
£37.00 per month
Get Deal
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Prices last checked and updated September 23rd, 2022. Cable.co.uk may earn a commission when you purchase via links on our site. The price you pay will always be equal to or often cheaper than the price you would pay by going direct to the provider. Broadband speeds are dependent on where you live and you may receive slower speeds than listed. Broadband is subject to availability. Please refer to individual broadband provider's terms and conditions before signing up. All prices are inclusive of VAT except business prices.

About unlimited mobile broadband deals

A good mobile broadband deal is a great stand-in, or in some cases even a replacement for the cabled variety of home broadband deals. But an unlimited mobile broadband deal is even better.

Unlimited mobile broadband doesn’t have to use your mobile phone either. It’s now possible to get unlimited mobile hubs (also known as routers or MiFis) that use their own SIM cards. There are also dongles, and mobile tethering (which is also known as using a personal hotspot that will enable you to make wider use of your mobile phone’s data signal). So, let’s look at what is currently available for you in the unlimited mobile broadband market.

What is unlimited mobile broadband?

As the name suggests, unlimited mobile broadband enables you to use uncapped data using a 4G or 5G signal – the same as you would with your mobile phone – for your computer, TV or any other compatible device’s wifi. With the introduction of 5G to more and more areas of the UK, mobile data speeds of up to 300Mbps max (which beats many cabled deals) are available. Even 4G could get you online at nearly 50Mbps (more likely 20-30Mbps), which is easily enough to use the web, watch and listen to streaming media, and even play some games online. So, how do you get online with unlimited mobile data?

  • Dongles – These are small devices that usually plug into your computer’s USB socket. Dongles come with their own data plans so you don’t have to use your mobile phone data. However, this does mean that you’ll have two contracts to deal with
  • MiFi devices – These are small, easily transportable, boxes that to all intents and purposes act like your home broadband router. The major difference between home broadband and MiFi devices is that a MiFi device can fit into your bag or even pocket, and can be used from anywhere. They’re usually charged by USB. A MiFi device can use the data from your mobile phone or it can have its own data plan and SIM. Basically a MiFi device creates a local network that up to 64 devices can access at the same time
  • Data-only SIMs – These SIMs (sometimes called ‘tablet SIMs’ but don’t be fooled by that name) are purely and simply that – data-only SIMs that you can’t use them for voice calls. While they certainly can be used in compatible tablets (hence that name), data-only SIMs are also available to use in mobile hubs (aka routers), and even some MiFi devices
  • Mobile hotspots/tethering – Your mobile phone’s data can be shared with other devices. You can create a mobile hotspot using your phone (or in some cases, tablet) settings, and then use that to ‘tether’ (connect) other devices to your service. Because we’re talking about unlimited data plans in this guide, tethering won’t mean that you have to keep an eye on your phone’s data cap
  • 4G/5G home broadband – Very similar to the MiFi devices we talked about earlier in this guide, a mobile home broadband router uses its own SIM to create a local wifi network. The big difference here is that your mobile router (or hub) plugs into your power supply rather than using batteries. It’s very much like a standard home broadband router except that it uses a mobile signal rather than a cabled connection to your provider’s broadband network
  • Public wifi – Free public wifi is available in more and more towns and cities in the UK when provided by local authorities or commercial organisations in partnership with local authorities. It is also frequently available in even the smallest pubs and cafes. The problems with free public wifi are usually very bad security, and an inconsistent and unreliable signal

Do I need unlimited mobile broadband?

The answer to this depends very much on where you are (and where you’re going), and how much you rely on an internet connection. Let’s have a look at the situations where you might want unlimited mobile broadband.

You have terrible fixed line broadband

Fibre broadband is available to the majority of UK households now but this doesn’t mean it’s always a reliable connection. You might also be in the minority who can’t get access to fibre in your area yet. Mobile broadband speeds are highly competitive with their fixed-line competitors, so if your mobile signal is consistently better than your fixed line, then a data SIM and a mobile wifi or MiFi hub (router) might be a good way to get a fast connection.

You travel a lot

If you’re forever on trains or buses, at airports or even on ferries and you need to work on the go, or you simply want to stay connected at all times, unlimited mobile broadband could be a solution. This is also true if you travel internationally. Be aware though that it’s a good idea to check the mobile coverage at your destination before you spend money on an additional data SIM rather than simply tethering your mobile phone data. You might also want to look into roaming options (and mobile broadband usage while roaming) available from your service provider to avoid any hefty unexpected charges.

Temporary measures

An unlimited mobile broadband plan (or even phone tethering) provides the same ability to browse the web, download files and use email, and, with 4G and 5G speeds, even play games and stream audio and video. Therefore if your cabled home broadband is down or you can’t get a decent speed, then a mobile data dongle, router, MiFi hub or even your phone’s data are great backup options.

No other options

If you live in an area that just doesn’t get fixed-line broadband, but you do have a mobile data signal, then an unlimited mobile data SIM plan with a wifi or MiFi-enabled router might just solve your connectivity problem.

Mobile broadband coverage and data speeds

Although there are myriad unlimited mobile data deals out in the market from numerous suppliers, there are only four physical networks in the UK: EE, Vodafone, Three and O2. Every other provider uses one of these networks.

This means that when you’re looking for your unlimited mobile data deal, find out which of the four network providers are providing the actual network your chosen service provider uses. This will enable you to check out the network coverage where you live (and where you want to travel to) before signing up. After all, there’s no point in paying out for data if you can’t actually access it.

In terms of upload and download speeds to expect, the days when mobile data couldn’t compete with a fixed-line broadband connection are rapidly disappearing with the rollout of 5G and the ubiquity of 4G. With 5G, on average you can expect to receive between 100Mps and 200Mbps; with 4G, between 20Mbps and 40Mbps (according to recent tests by Opensignal). So, what was once a stop-gap or last resort is fast becoming a serious contender for your primary connection.

What unlimited mobile data deals are on offer?

In this guide we’ve reviewed the fact that there are only actually four main network providers for mobile data in the UK: EE, O2, Vodafone and Three, all of whom offer unlimited mobile data deals. However, other companies piggyback, or make use of, these four major networks and they try to offer extras to attract you. Starting with the big four, we’ll now look at what’s on offer.

  • EE unlimited mobile broadband – EE offers five different mobile data routers, three of which offer up to 4G speeds, and two ‘5GEE’ routers that offer 5G speeds. EE also offers unlimited data SIMs
  • Vodafone mobile broadband – Vodafone covers all the mobile data device bases offering a 4G data dongle, 4G and 5G mobile wifi hotspot routers, a GigaCube that offers up to 5G speeds, and the old faithful data-only SIM
  • Three mobile broadband – Three has teamed up with Huawei for its unlimited mobile data provision. It offers both 4G and 5G mobile broadband and a 4G MiFi-enabled Huawei router for home use and travel use. You can also get data-only SIMs
  • O2 – In terms of unlimited mobile data, O2 offers 4G dongles and MiFi pocket hotspot devices, in addition to an unlimited data SIM
  • Virgin Mobile – Virgin’s mobile data is provided by Vodafone’s mobile network, so it has decent coverage in the UK. In terms of unlimited data deals, it offers portable 4G wifi dongles, and MiFi routers also powered by Huawei in addition to data SIMs for tethering other devices to your Virgin mobile phone

Unlimited mobile broadband checklist: what you need

If you are interested in unlimited mobile data deals, first find out what you’ll need to make the most of the megabytes on offer. Here’s our quick checklist.

You need a good signal

The most amazing unlimited data deal in the world isn’t going to be any use to you if you don’t have a reliable 3G, 4G or 5G signal. And frankly 3G is not really up to snuff if you want to replace your home broadband completely. So, check with the provider as to what their coverage in your specific locality is, and also ask them for the median (average) download speeds before forking out for an unlimited data SIM, dongle or MiFi hub. It’s also a good idea to check for the areas you regularly visit, and check which mobile technologies are widely available wherever you’re going.

Will a temporary solution work for you?

If your home broadband is fine for your needs but you travel for work or just for fun then your own phone can do the trick. If you already have a mobile phone that offers the ability to create a personal hotspot so you can tether (connect) other devices to it, then investing in an unlimited data SIM deal could be perfect for you.

To dongle or not to dongle

Frankly, dongles are becoming less and less available due to the wide availability of smartphones that offer the option to create personal wifi hotspots and portable MiFi devices. However, if your phone can’t provide a hotspot, then a dongle that plugs into your computer’s USB slot offers a quick fix.

MiFi or wifi?

A broadband hub (also known as a router) that uses mobile data rather than a cabled connection to your service provider can be a hugely useful back-up. In fact, with widely available 4G and 5G speeds, you can even use it as your primary connection to the internet. A MiFi is best if you want portability as it is smaller and battery-powered. A 4G/5G home wifi router is mains powered and likely to be bigger and less portable.

Frequently asked questions

Can I get unlimited mobile broadband?

More than likely, yes you can, however, you'll need to check that you’ll get reliable coverage. You can use our deal comparison page to find the best offers in your area.

What's the fastest unlimited mobile broadband I can get?

EE has consistently offered the fastest average mobile data speeds in the UK, but only for 4G. Its 4G optimal speed is 60Mbps. Its 5G is also good, averaging 129Mbps, but not as fast as Three, whose 5G download speed averages 204Mbps (according to Opensignal).

Is a MiFi device better than mobile tethering?

If you want a separate data SIM from your phone’s then yes, MiFi is definitely better for you. Also, if you want to reliably share your mobile data with more than a couple of people, then Mifi with up to 64 people is the way to go. If, however, you’re after a temporary solution on the go, then tethering is definitely cheaper and quicker.

Is there such a thing as pay-as-you-go mobile unlimited broadband?

All of the big four network providers – EE, Three, Vodafone and O2 – offer unlimited data broadband deals (PAYG)/top-up basis. Several of the providers who make use of those four networks (piggybacking) are also in the market. These offers are mostly for data-only SIMs though.

How does mobile broadband work?

The big difference between home broadband and mobile data is that the latter is delivered wirelessly using mobile network masts rather than cables running into your home.

Should I get 4G or 5G mobile broadband?

Of course this depends on the coverage in your area (or the area you’re travelling to). 4G is widely available in the UK, however, if you can find a good deal on a 5G unlimited data deal, this will obviously provide the fastest speed if your home, or intended usage area, has 5G coverage. A 5G router, hub, dongle or SIM will be able to downgrade its reception to 4G and even 4G, if needed.

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