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5G Unlimited Data SIM plans

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Triple SIM (Standard, Micro and Nano)

Micro SIM card
Three
Unlimited Data
12 month contract
£16.00 a month
12 month contract
£16.00 a month
Black Friday

Triple SIM (Standard, Micro and Nano)

Micro SIM card
Vodafone
Unlimited Data
24 month contract
£20.00 a month
24 month contract
£20.00 a month
Max speeds 10mbps

Triple SIM (Standard, Micro and Nano)

Micro SIM card
Three
Unlimited Data
24 month contract
£21.00 a month
24 month contract
£21.00 a month
6 months half price

Triple SIM (Standard, Micro and Nano)

Micro SIM card
Vodafone
Unlimited Data
24 month contract
£22.00 a month
24 month contract
£22.00 a month
Max speeds 2mbps

Triple SIM (Standard, Micro and Nano)

Micro SIM card
Vodafone
Unlimited Data
24 month contract
£23.00 a month
24 month contract
£23.00 a month
Fastest available speeds

Triple SIM (Standard, Micro and Nano)

Micro SIM card
Vodafone
Unlimited Data
12 month contract
£24.00 a month
12 month contract
£24.00 a month
Max speeds 2mbps

Triple SIM (Standard, Micro and Nano)

Micro SIM card
Three
Unlimited Data
1 month contract
£24.00 a month
1 month contract
£24.00 a month

Triple SIM (Standard, Micro and Nano)

Micro SIM card
Vodafone
Unlimited Data
12 month contract
£28.00 a month
12 month contract
£28.00 a month
Max speeds 10mbps
  • Overview

Overview

5G unlimited data plans are the ultimate way to get the most out of your phone, as you get a combination of the fastest possible speeds through 5G, and no limits on how much data you can use.

It’s the perfect pairing, as 5G offers not just unparalleled speed for streaming, downloading and more, but also low latency, and it even unlocks the potential for whole new use cases.

But it’s only as good as your data limit – 5G paired with a 1GB allowance for example would severely limit your ability to make use of its superfast speeds.

The good news there is that many networks now offer unlimited data. Some have been doing this for years, while others launched unlimited data plans at around the same time as 5G, recognising how important this would be.

But the terms and restrictions vary from network to network, and there are still some 5G networks that don’t offer unlimited data at all. So with all that in mind we’ve created this guide, highlighting your unlimited data 5G options.

Which networks offer 5G unlimited data?

At the time of writing, EE, O2, Three, Vodafone, VOXI and BT Mobile all offer some form of unlimited 5G data. Note that some other networks also offer unlimited data, but they don’t yet offer 5G.

EE

At the time of writing, EEO2ThreeVodafoneVOXI and Tesco Mobile all offer some form of unlimited 5G data. Note that some other networks also offer unlimited data, but they don’t yet offer 5G. That includes BT Mobile, which offered 5G for a while but isn’t currently making it available to new customers.

EE

EE offers unlimited 5G data to both new and upgrading customers on both Pay Monthly and SIM Only plans. If you’re buying a handset or Smart plan then 5G comes as standard.

There’s no speed cap on EE’s 5G plans, with the network claiming that you can expect 5G speeds that average around 100-150Mbps more than its average 4G speeds, which should put them at around 130-240Mbps. However, peak speeds can theoretically exceed 1Gbps.

While there’s no speed cap, EE does have a fair use policy, which states that if you regularly tether 12 or more devices or use over 1,000GB of data in a month then it may consider this non-personal use and could move you to a more suitable plan. These sorts of restrictions shouldn’t affect many users though.

EE’s 5G unlimited data plans last 24 months whether you opt for SIM Only or a Pay Monthly plan with a 5G phone. Note that at the time of writing EE 5G is not available on Pay As You Go, and nor is it available while roaming.

However, you will get some extras with your 5G plan. Specifically, you’ll get a choice of one or more of the following: an Amazon Prime Video subscription, access to additional free roaming locations through Roam Further, a BritBox subscription, Apple Music, or the ability to stream BT Sport on your phone in HDR. If opting for Pay Monthly with an Apple handset then some of those will be swapped out for Apple TV Plus and Apple Arcade.

EE SIM deals

O2

O2 offers 5G with unlimited data on both Pay Monthly and SIM Only. One area where O2 provides more options than most networks though is how long its unlimited data Pay Monthly contracts last. You can choose anything from 3 to 36 months, with prices adjusting accordingly, and these plans are available to both new and upgrading customers.

There’s no speed cap on O2’s 5G plans. O2 hasn’t said exactly how fast its 5G service is, but we’d expect average speeds in the range of 150-250Mbps, as that’s what rivals typically promise.

O2 does however have a fair usage policy, which states that if you use 650GB of data twice in a six-month period, or if you regularly tether to 12 or more devices, then it may investigate your usage.

There’s not currently 5G roaming on O2, but you can access O2’s network of Wi-Fi hotspots and its Priority app, which gives you various discounts, competitions, freebies and the chance to buy certain event tickets before they go on general sale.

O2 SIM deals

Three

All of Three’s mobile plans are 5G-ready. That means you just need a 5G device and coverage, and then you’ll instantly be able to access 5G at no extra cost, whether on Pay Monthly, SIM Only or Pay As You Go.

Three was also one of the first UK networks to offer unlimited data, and you can get it on both Pay Monthly and SIM Only plans, and there’s even an unlimited data add-on for Pay As You Go and the option to get 5G home broadband with unlimited data.

Three doesn’t offer 5G roaming, but early tests suggest its peak 5G speeds in the UK are even higher than rivals, so this could be the network for speed.

There’s currently no fair usage policy to worry about with unlimited data on Three either.

Other things to note are that SIM Only plans last 1, 12 or 24 months, while Pay Monthly plans are all 24 months long. The main extra you get on Three is free roaming in numerous locations beyond Europe – but as noted above this isn’t currently offered at 5G speeds.

Three SIM deals

Vodafone

Vodafone offers a number of unlimited data plans. These are available on both Pay Monthly (with plans lasting 24 months) and SIM Only (on plans lasting 1, 12 or 24 months) and to both new and upgrading customers, but it’s slightly less obvious which ones include 5G than with other networks, as rather than saying a plan is ‘5G’ or ‘4G’, they instead say how fast they are.

In reality, the only ones that truly give 5G speeds are the ‘Unlimited Max’ plans, which offer the ‘fastest available’ speeds, so this is what you’ll want. Be aware that even if you buy a 5G handset, some of the plans you’ll be offered with it will have restricted speeds, so again, make sure it’s Unlimited Max that you opt for.

As for what speeds you can expect on unrestricted plans, Vodafone claims that its 5G speeds will average 150-200Mbps, with peak speeds reaching around 1Gbps.

Vodafone also offers unlimited 5G data with 5G home broadband, and on Pay As You Go. Its fair use policy meanwhile states that use should not exceed that reasonably expected of a reasonable person.

Unlike most networks, Vodafone does offer a 5G roaming service, with 5G offered in a growing number of locations. At the time of writing it’s limited to various towns and cities in Spain, Germany, Italy and the Republic of Ireland.

Beyond 5G roaming, the main benefit on Vodafone 5G is the ability to get a subscription to an entertainment service thrown in with your plan. You can choose from Amazon Prime, YouTube Premium, or Spotify Premium.

Note that these subscriptions aren’t free, as they push up the price of the plan compared to Unlimited Max plans without entertainment, but they are typically cheaper than paying for the subscription separately would be.

Vodafone SIM deals

BT

BT Mobile for a while offered both 5G and unlimited data, however at the time of writing it has stopped offering 5G to new customers.

But if you already have an unlimited data 5G plan on BT then you can keep using it.

VOXI

VOXI offers just one 5G plan at the time of writing and handily it comes with unlimited data. It’s available on both SIM Only and Pay Monthly and in both cases you’re only tied in for 30 days (though in the case of Pay Monthly you’ll still have to pay off your phone of course, even if you change your plan early).

Both new and existing VOXI customers are eligible for this plan and there are no speed restrictions, though VOXI’s fair usage policy notes that it may take action if use is ‘excessive’, damaging to the network, or appears to be commercial in nature.

VOXI hasn’t said exactly how fast its 5G is, but it uses Vodafone’s infrastructure, which means you can probably expect average speeds of around 150-200Mbps, with peak speeds of up to 1Gbps.

VOXI mostly stands out though through its offering of 5G roaming, a service it offers in the same selection of locations as Vodafone (which owns VOXI). That means you can roam at 5G speeds across numerous towns and cities in Spain, Italy, Germany and the Republic of Ireland, at no extra cost. Note that at the time of writing these are the only two UK networks to offer 5G roaming.

VOXI SIM deals

Tesco Mobile

Tesco Mobile offers 5G unlimited data on both SIM Only and with a handset – though it also still offers 4G plans too, so make sure you opt for a plan that says it includes 5G or comes with a 5G phone.

Tesco uses O2’s infrastructure, so its coverage will be the same and its speeds will likely be similar. You can tether with 5G unlimited data, but roaming is limited to 4G speeds.

Being an MVNO (mobile virtual network operator) Tesco Mobile doesn’t have all the extras of the big networks, but the flip side is its prices are often lower, so if you want a 5G unlimited data SIM plan on a budget then it’s worth keeping an eye on.

Pay As You Go

If you want unlimited 5G data on Pay As You Go then your options are currently more limited. In fact, your only options are Three and Vodafone at the time of writing, both of which offer an unlimited data Pay As You Go pack with 5G speeds, plus unlimited minutes and texts.

Though at the time of writing Three’s is a lot cheaper, coming in at £30 per month while Vodafone’s is £50.

Which networks offer 5G but not unlimited data?

If you’ve decided you don’t need unlimited data but do want 5G, then you may also want to consider the network below, which at the time of writing is the only UK network to offer 5G with no unlimited data option.

Sky Mobile

Sky Mobile currently offers 5G plans with up to 30GB of data on both Pay Monthly and SIM Only – so some way short of unlimited. Plans for the latter last 12 months while the former last a choice of 12 or 24 months.

Sky Mobile’s speeds aren’t capped and should be similar to O2’s, since it uses that network’s infrastructure. 5G roaming isn’t currently offered by Sky Mobile, but you do get to roll over unused data from one month to the next, and if you’re a Sky TV customer then you can watch Sky apps on your device without it coming out of your data allowance.

Frequently asked questions (FAQ)

Do I really need unlimited data?

That entirely depends on your usage. If you’re using a lot of data now, or envisage 5G dramatically changing the way you use your phone, then it could be worth having.

If on the other hand you’re a relatively light user then 5G is unlikely to change that – though you’ll still probably want a reasonable data allowance so you can make the most of 5G, but you might be fine on as little as 5-10GB per month.

Unlimited data is mostly useful if you’re streaming or downloading a lot of films and TV shows, downloading lots of large apps or games, or playing games online regularly.

Can I put a 5G SIM in my phone?

You can put a 5G SIM in your current phone and – as long as your phone is unlocked or on the same network – the SIM should work, though if you put it in a 4G handset then you won’t be able to take advantage of 5G speeds.

As with previous generations though it won’t work if your phone is locked to another network. In that case you’ll first need to unlock your handset. The good news is that most networks will unlock your phone on request, either for free or for a small charge.

What happens if I’m not in a 5G coverage area?

If you’re not in a 5G coverage area then your phone will revert to a 4G, 3G or 2G signal, depending on what coverage is available, just as 4G phones will revert to 3G or 2G when needed.

However, if you don’t live or work in an area that currently has 5G coverage then you might want to wait before getting a 5G SIM deal anyway, since you probably won’t benefit much until you do have coverage.

Will a 5G SIM card work in a 4G phone?

Yes, but of course it will only be able to provide a 4G signal at most. For 5G speeds you’ll need a 5G handset.

Can I keep my number?

Yes, and the process is simple.

If you’re upgrading on your current network then your number will stay the same anyway, but if moving network you just need to request your PAC code from your old network (while the number is still active), then activate your new SIM if you haven’t already, and tell your new network your PAC code and old number.

Requesting your PAC code can be done by texting ‘PAC’ to 65075 from the number that you want to keep. Giving the code to your new network is usually done via on online form, but the exact process will vary from network to network. If in doubt, give your new network a call.

Can I get a SIM card for my tablet or mobile broadband dongle?

Yes, but you will want a data only SIM which only comes with a bundle of data and doesn't have included minutes and texts.

What happens if I’m not in a 5G coverage area?

If you’re not in a 5G coverage area then your phone will revert to a 4G, 3G or 2G signal, depending on what coverage is available, just as 4G phones will revert to 3G or 2G when needed.

However, if you don’t live or work in an area that currently has 5G coverage then you might want to wait before getting a 5G SIM deal anyway, since you probably won’t benefit much until you do have coverage.

Will a 5G SIM card work in a 4G phone?

Yes, but of course it will only be able to provide a 4G signal at most. For 5G speeds you’ll need a 5G handset.

Can I keep my number?

Yes, and the process is simple.

If you’re upgrading on your current network then your number will stay the same anyway, but if moving network you just need to request your PAC code from your old network (while the number is still active), then activate your new SIM if you haven’t already, and tell your new network your PAC code and old number.

Requesting your PAC code can be done by texting ‘PAC’ to 65075 from the number that you want to keep. Giving the code to your new network is usually done via on online form, but the exact process will vary from network to network. If in doubt, give your new network a call.

Can I get a SIM card for my tablet or mobile broadband dongle?

Yes, but you will want a data only SIM which only comes with a bundle of data and doesn't have included minutes and texts.

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