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Which networks offer unlimited data?

11th June 2021

Unlimited data is great because you never need to worry about overspending or running out of data again. Below you’ll find details of all the networks offering unlimited data, along with any restrictions and fair usage policies they have.

Table of Contents

Networks offering unlimited data

Unlimited data is currently available on 14 networks in the UK, which include BT Mobile, EE, GiffGaff, iD Mobile, Lebara Mobile, Lycamobile, O2, Smarty, Tesco Mobile, Three, Virgin Mobile, Vodafone, Asda Mobile and VOXI.

Different networks have different restrictions and unique selling points, so it’s worth getting fully up to speed before choosing an unlimited data plan.

We have handpicked some of the best value unlimited data SIM deals below, all of which have no speed restrictions.

Best Unlimited Data SIM deals (June 2021)

Three SIM Card

Three

12 Month Plan

Unlimited data

Unlimited mins

Unlimited texts

£16 a month

View Deal

5G plan with no speed restrictions

iD SIM Card

iD Mobile

12 Month Plan

Unlimited data

Unlimited mins

Unlimited texts

£16 a month

View Deal

5G plan with no speed restrictions

Smarty SIM Card

Smarty

1 Month Plan

Unlimited data

Unlimited mins

Unlimited texts

£16 a month

View Deal

4G plan with no speed restrictions

Vodafone SIM Card

Vodafone

12 Month Plan

Unlimited data

Unlimited mins

Unlimited texts

£33 a month

View Deal

5G plan with no speed restrictions

O2 SIM Card

O2

12 Month Plan

Unlimited data

Unlimited mins

Unlimited texts

£33 a month

View Deal

5G plan with no speed restrictions

EE

EE offers unlimited data plans on SIM Only and with Pay Monthly phones.

EE offers two unlimited data SIM plans, which are on 24-month contracts. Both plans come with 5G data, and a 50GB roaming allowance in 48 European countries, with the main difference between them being whether you get 1 or 3 Smart Benefits included.

Smart Benefits currently available to choose from on the plan that comes with 1 are Apple Music, Amazon Prime Video, BT Sport Ultimate, BritBox, and Roam Further Pass, while the plan with 3 benefits (designed for iPhone customers) has the options of Apple TV Plus and Apple Arcade in place of Prime Video and BritBox.

EE Logo EE Unlimited data SIM Plans

Unlimited data

Unlimited mins

Unlimited texts

24 Month Plan

Includes 5G data + 1 Smart Benefit

£37 a month

View Deal

24 Month Plan

Includes 5G data + 3 Smart Benefits

£41 a month

View Deal

Both plans include roaming in Europe and unlimited tethering

Those who have multiple plans on their account can also gift up to 100GB of data per month to another EE plan (or 120GB if you have a Smart handset plan), which is good for those with children who run out of data.

There is a small premium to pay for choosing EE, but the network offers higher average speeds and has more widespread coverage than its rivals. There are some slight fair usage terms though, which you can see in the chart at the end of this article.

O2

O2 was the last of the major networks to begin offering unlimited data, but unlimited data is now available on SIM Only and Pay Monthly handset plans.

There are no speed restrictions and all of O2's unlimited plans come with 5G data included.

O2 Logo  O2 Unlimited data SIM Plans

Unlimited data

Unlimited mins

Unlimited texts

24 Month Plan

£25 a month

View Deal

12 Month Plan

£33 a month

View Deal

1 Month Plan

£36 a month

View Deal

Both plans include 5G, roaming in Europe and unlimited tethering

Free data roaming in Europe has a 25GB limit per month, however some plans also let you roam further afield. Plans also include unlimited tethering, so you can share internet with other devices over a personal hotspot.

O2’s fair usage policy states that you shouldn’t use 650GB of data twice within a six month period, or regularly tether 12 or more devices.

Three

Three offers truly unlimited data on SIM Only, Pay Monthly and Pay As You Go phone plans, as well as unlimited Mobile Broadband plans.

There are no speed restrictions on Three's unlimited data plans, and you can tether as much data as you like. All plans are also 5G ready at no extra cost, so you can enjoy superfast speeds when 5G comes to your area.

Three MobileThree Unlimited Data SIM Plans

Pay Monthly contracts

Unlimited data

Unlimited mins

Unlimited texts

12 Month Plan

£16 a month

View Deal

24 Month Plan

£10 a month £20

6 months half price

View Deal

1 Month Plan

£24 a month

View Deal

Pay As You Go

Unlimited data

Unlimited mins

Unlimited texts

Pay As You Go

Lasts for 30 days

£35

View Deal

Pay As You Go

Lasts for 90 days

£90

View Deal

All plans include 5G at no extra cost, Worldwide roaming in 71 destinations and unlimited tethering

Data roaming also comes at no extra cost on all plans and covers 71 worldwide destinations in Europe and beyond. Data roaming on Three is limited to 20GB in Go Roam In Europe destinations and 12GB in Go Roam Around The World destinations.

There is currently no fair usage policy for unlimited data on Three. The network used to mention a 1000GB monthly soft cap (which is still far more than most people would ever use), but reference to this has been removed.

Vodafone

Vodafone also offers unlimited data SIM Only and phone plans including the option for unlimited 5G data.

A choice of 3 plan types are available, each of which offers different maximum download speeds.

Unlimited Lite plans offer max download speeds of 2Mbps (fast enough to browse and stream music), Unlimited plans offer speeds up to 10Mbps (fast enough to stream HD video), and Unlimited Max plans offer the maximum available speeds with no restrictions, and in reality are the only ones able to benefit from 5G speeds.

Vodafone Logo Vodafone Unlimited data SIM Plans

Unlimited Lite plans

Max download speed 2Mbps

Unlimited data

Unlimited mins

Unlimited texts

24 Month Plan

£20 a month

View Deal

12 Month Plan

£24 a month

View Deal

1 Month Plan

£36 a month

View Deal

Unlimited plans

Max download speed 10Mbps

Unlimited data

Unlimited mins

Unlimited texts

24 Month Plan

£23 a month

View Deal

12 Month Plan

£28 a month

View Deal

1 Month Plan

£40 a month

View Deal

Unlimited Max plans

Fastest available speeds

Unlimited data

Unlimited mins

Unlimited texts

24 Month Plan

£30 a month

View Deal

12 Month Plan

£33 a month

View Deal

1 Month Plan

£37 a month £45

View Deal

Pay As You Go

Pay As You Go

Unlimited data

Unlimited mins

Unlimited texts

Pay As You Go

Lasts for 30 days

£40

View Deal

All plans include 5G, roaming Europe and unlimited tethering

Tethering is included and you can use up to 25GB of data per month when roaming in 51 European countries. On Unlimited Max plans free roaming is extended to a total of 81 countries, not all of which are in Europe.

There is also the option to add an Entertainment bundle to the 12 or 24-month Unlimited and Unlimited Max plans for an extra £7 per month, which gives you a choice of a subscription to Amazon Prime, Spotify Premium, or YouTube Premium for the duration of the contract. Entertainment packages are also available on Pay Monthly with a handset.

Vodafone now also has an unlimited Pay As You Go plan. It’s a 5G plan that comes with roaming in 51 European countries (with a 25GB monthly roaming limit), and you will also get VeryMe Rewards – which include things like free movie rentals and tasty treats.

Asda Mobile

Asda Mobile launched unlimited data plans later than most, but they’re available now, alongside 5G speeds using Vodafone’s infrastructure.

At the time of writing the network sells three different unlimited data 30-day SIM Only plans, and while they all let you use 5G signals, only the one listed at ‘150Mbps’ will offer 5G speeds – the other two options are slower.

Asda Mobile also allows tethering and free roaming in much of Europe, but there aren’t any handset plans – you can only go SIM Only or pay as you go.

Smarty Logo Asda Unlimited SIM Bundles

Unlimited data

Unlimited mins

Unlimited texts

Pay As You Go

£20

2Mbps max speeds

View Deal

£25

10Mpbs max speeds

View Deal

£30

150Mbps max speeds

View Deal

Includes roaming in Europe and unlimited tethering

BT Mobile

BT Mobile, which shares a network with EE, is offering an unlimited data SIM plan, but only to BT Halo customers (previously called BT Plus).

The plan is available in a 12-month or 24-month flavour, and includes unlimited minutes and texts. It also includes tethering and free roaming in Europe. As part of the package you also get access to BT’s network of Wi-Fi hotspots. The plan also includes 5G.

BT Mobile Logo BT Mobile Unlimited Plans (for BT Halo customers only)

Unlimited data

Unlimited minutes

Unlimited texts

12 Month Plan

£25 a month

View Deal

Includes 5G, unlimited home phone plan worth £12, roaming in Europe and unlimited tethering

Giffgaff

Giffgaff, which use O2's network, offers an unlimited data goodybag (add-on) with 4G data, or a golden goodybag (add-on) with unlimited 5G data included. They can both be purchased on SIM Only or with a mobile phone.

There are some restrictions with the 4G plan, with only the first 80GB of use per month being at full 4G speeds. After that speeds are capped at 384kbps between 8am and midnight, which is quite slow. You can tether, but the same speed restrictions apply.

The 5G plan has no such speed restrictions, but there is a fair usage policy stating that you should use under 650GB of data a month, and shouldn’t tether with 12 or more devices at once.

GiffGaff Log GiffGaff Unlimited Data Goodybag

Unlimited data

Unlimited minutes

Unlimited texts

4G Plan

* speeds restricted after 80GB use

£25 a month

View Deal

5G Plan

£35 a month

View Deal

Includes roaming in Europe and unlimited tethering

Free roaming meanwhile is fully capped at 20GB per month on both plans and the only way to use your data beyond Europe is to pay for the roaming data separately.

iD Mobile

iD Mobile, which uses the Three network and is owned by Dixons Carphone, now offers an unlimited data plan on a 1 or 12-month SIM Only contract, or as part of a 24-month handset plan.

Roaming abroad in 50 European countries is included and you can also tether as much data as you like. When roaming there’s a fair usage policy which states that if you spend more time abroad in a 4-month period than in the UK you may be asked to prove you have strong ties to the UK.

 

iD Mobile Logo iD Mobile Unlimited SIM plan

Unlimited data

Unlimited minutes

Unlimited texts

24 Month Plan

£15 a month

View Deal

12 Month Plan

£16 a month

View Deal

1 Month Plan

£18 a month

View Deal

All plans include 5G, roaming in Europe and unlimited tethering

Like Three's unlimited plans, iD Mobile's unlimited plan is 5G ready, so you will  be able to enjoy 5G speeds. At the current time iD Mobile does not specify a fair usage policy with regards to data usage in the UK.

Lebara Mobile

Lebara (which runs off Vodafone’s infrastructure) offers a 30-day SIM Only plan that comes with unlimited 4G data, minutes, and texts.

The network additionally lets you roam for free across the EU and use your data to tether, but the big selling point is you also get either 100 or unlimited minutes of international calling to 41 countries, including Australia, United States, Canada, India, New Zealand, China and many more.

Lebara Logo Lebara Mobile Unlimited SIM plan

Unlimited data

Unlimited minutes

Unlimited texts

+ 100 international minutes

1 Month Plan

£25 a month

View Deal

Unlimited data

Unlimited minutes

Unlimited texts

+ Unlimited international minutes

1 Month Plan

£30 a month

View Deal

Includes roaming in Europe and unlimited tethering

Lycamobile

Lycamobile, which uses O2's network, has launched unlimited data plans, and these also give you unlimited minutes and texts.

One of these plans gives you unlimited data at 4G speeds, while one does the same while also giving you unlimited international minutes to dozens of locations. You can tether on Lycamobile too, and you can roam within the EU at no extra cost.

Lycamobile Logo Lycamobile Unlimited Data SIM

Unlimited data

Unlimited minutes

Unlimited texts

+ 100 international minutes

Pay As You Go

£15 a month

View Deal

Unlimited data

Unlimited minutes

Unlimited texts

+ Unlimited international minutes

Pay As You Go

£20 a month

View Deal

Smarty

Smarty, which uses Three's network, offers a great value unlimited data SIM plan which comes with no speed or tethering restrictions. 

Smarty's unlimited plan is a 1-month rolling plan that comes with 4G included, but you will not currently get access to 5G as you would on Three – though this is planned to happen in the future.

Smarty Logo Smarty Unlimited SIM Plan

Unlimited data

Unlimited mins

Unlimited texts

1 Month Plan

£16 a month

View Deal

Includes roaming in Europe and unlimited tethering

Currently, Smarty only offers SIM only plans, so no unlimited Pay Monthly phones or Mobile Broadband plans are available.

Data roaming is limited to 20GB per month and you can only roam for free across the EU, which is another key difference with Three's plans, as these include free roaming in a number of places further afield too.

Tesco Mobile

Tesco Mobile, which uses O2's network, offers unlimited data on both SIM Only and Pay Monthly, and on both 4G and 5G plans (but at the time of writing 5G doesn’t come as standard, so make sure you’re on a 5G plan if you want it).

The plans are available in 12 or 18-month varieties on SIM Only, or variable lengths with a handset, and they also include 5,000 minutes and texts. You can also roam for free in Europe and tether.

Tesco Mobile Logo Tesco Mobile Unlimited Data Plans

Unlimited 4G data

Unlimited minutes

Unlimited texts

18 Month Plan

£27.50 a month

View Deal

Unlimited 4G data

Unlimited minutes

Unlimited texts

18 Month Plan

£30 a month

View Deal

Includes roaming in Europe and tethering

Virgin Mobile

Virgin Mobile, which uses Vodafone's network, also offers unlimited data, and while this used to only be available to customers of other Virgin products, it’s now available to everyone at the time of writing.

It’s also truly unlimited, includes 5G and comes in at a competitive price, whether you opt for a 12 or 24-month plan.

Virgin Mobile Logo Virgin Unlimited Plans

Unlimited data

Unlimited minutes

Unlimited texts

12 Month Plan

£28 a month

View Deal

24 Month Plan

£25 a month

View Deal

Includes 5G, roaming in Europe and unlimited tethering

You also get unlimited data for tethering – or at least, according to a customer service agent we spoke to you do, however at the time of writing there is no confirmation of this on Virgin Mobile’s website.

However, unlimited data is not available on mobile broadband plans. There are also restrictions when roaming. This cap changes though, so for an up to date figure, use Virgin Mobile’s fair use calculator.

VOXI

VOXI, which is a network run and owned by Vodafone, is now offering a 5G unlimited data plan that’s been branded Endless Data.

Importantly, VOXI's unlimited data plan comes with 5G as standard and has no speed restrictions. Tethering is also included so you can share data over a personal hotspot, and you also get free roaming in Europe (up to 25GB per month).

Overall, VOXI's unlimited data plan is a slightly more affordable alternative to Vodafone, and it comes with ultimate flexibility, as there is no contract, meaning you can leave at any time.

VOXI Logo VOXI Unlimited SIM plan

Unlimited data

Unlimited minutes

Unlimited texts

1 Month Plan

£35 a month

View Deal

Includes 5G, roaming in Europe and unlimited tethering

What about the other UK networks?

The other UK networks currently do not offer unlimited data. However, many do have high data limits which you can see in the table below.

UK Networks Maximum Data Allowances

Operator

Max data

Tethering

Roaming

FreedomPop

4GB

4GB

N/A

Plusnet Mobile

14GB

14GB

15GB

Sky Mobile

60GB

60GB

60GB

Talkmobile

100GB 100GB 100GB

FreedomPop

FreedomPop has a range of SIM Only plans offering up to 4GB of data. You can use this data to tether if you also subscribe to its Premier service.

The network doesn’t currently offer any Pay Monthly, Pay As You Go or mobile broadband plans, and you can’t roam on any of its current plans. All plans come with 4G speeds as standard.

Plusnet Mobile

Plusnet Mobile only has SIM Only plans and these come with up to 14GB of data (though it tops out at 12GB if you’re not a Plusnet broadband customer) at the time of writing.

However, Plusnet regularly changes its plans, so there’s every chance these figures will be out of date by the time you read this – check with Plusnet direct for the latest available allowances.

You can use any or all of this data for tethering and up to 15GB for free roaming. 4G is included as standard, but there’s no 5G.

Sky Mobile

Sky Mobile offers both Pay Monthly and SIM Only plans and these include up to 60GB of monthly data. You can use as much of this as you want for tethering or roaming. Sky Mobile also supports 5G.

Talkmobile

Talkmobile offers SIM Only plans with up to 100GB of data, and you can use this to tether and roam.

Is unlimited data unlimited?

Yes, in most cases unlimited data really means unlimited.

Most networks do have a fair usage policy, but they are only in place to identify commercial or illegal usage. Therefore, those using the plans for personal usage don't need to worry about them.

However, you should note that some networks implement speed restrictions on unlimited plans. You can view any restrictions or significant fair usage policy (for use in the UK) for each network in the table below.

These were up to date to the best of our knowledge at the time of writing, but it’s always worth checking with a network directly if in doubt. Also note that where there’s ‘none’ listed, it’s still likely that the network doesn’t allow commercial use.

Unlimited Fair Use Policies

Network

Restrictions

Three

None

Smarty

None

O2

Fair usage policy of 650GB per month and maximum 11 tethering devices at once

EE

Fair usage policy of 600GB per month and maximum 11 tethering devices at once

Vodafone

Speeds restricted on Unlimited Lite (2Mbps) and Unlimited (10Mbps) plans

iD Mobile

None

BT Mobile

BT Halo customers only

Lebara Mobile

None

Giffgaff

Speed restrictions after 80GB on 4G plan, fair use policy of under 650GB per month

Lycamobile

None

Tesco Mobile

None

Virgin Mobile

None

VOXI

General fair usage policy

Asda Mobile

Speed restrictions on some plans

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