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Three All-You-Can-Eat unlimited data: SIM only deals, prices and review

Find All-You-Can-Eat unlimited data SIM only deals from Three, see monthly prices and read our quick review and comparison with other unlimited data SIMs.

Compare Three's unlimited data deals

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To find your best deal, use the filters below to get the right minutes, texts and contract length.

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Showing SIM only deal(s) available with at least any minutes, any texts and unlimited data on 4G, on any length contract

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Unlimited texts
200 mins
Unlimited data
on 4G
£20 a month
on a 12 month contract

Grab deal now

Unlimited texts
200 mins
Unlimited data
on 4G
£ a month
on a month contract

Grab deal now

Unlimited texts
600 mins
Unlimited data
on 4G
£25 a month
on a 12 month contract

Grab deal now

Unlimited texts
600 mins
Unlimited data
on 4G
£28 a month
on a 1 month contract

Grab deal now

Unlimited texts
Unlimited mins
Unlimited data
on 4G
£30 a month
on a 12 month contract

Grab deal now

Unlimited texts
Unlimited mins
Unlimited data
on 4G
£33 a month
on a 1 month contract

Grab deal now

What makes Three's All-You-Can-Eat data unbeatable:

Unlimited data from Three

Green tick No limits on how much data you download / upload

Green tick Never pay any extra charges for data usage in the UK

Green tick Full 4G speeds at all times (apart from P2P filesharing)

Want to learn more about joining Three? Read the most frequently asked questions at the bottom of this page.

The closest anyone else can get to All-You-Can-Eat data:

giffgaff offer a deal known as 'Always on' data that might seem to be offering unlimited data:

Unlimited texts
Unlimited mins
Always on data
on 4G
£20 a month
on a 1 month contract
giffgaff limit to 2G speeds after 6GB

The problem is: 'Always on' gives you get just 6GB of usage at the 4G speeds you're paying for. Then it downgrades you to just 2G speed.

There's no limit on the number of GB with 'Always on' but it will take you forever to use the internet!

Three's All-You-Can-Eat offers all your data at 4G speeds with the only restriction on P2P filesharing, which most people never use their phone for anyway.

Your frequently asked questions about Three's unlimited data SIMs, answered:

Is Three's All-You-Can-Eat data truly unlimited?

Yes. You can download and upload as much data as you like.

The only restriction is on P2P filesharing, which is slowed down at peak hours (15:00-0:00) weekdays and weekends.

This doesn't affect normal phone use like internet browsing, video watching, streaming etc, which you'll get at full blown 4G speeds all the time.

Don't giffgaff do an unlimited data SIM too?

giffgaff have what they call an 'Always On' data SIM for £20, which seems like it's unlimited data.

However, the catch with 'Always on' data is: once you've used up 6GB data, giffgaff will slow you down to 2G speeds.

Can I use this SIM for tethering (personal hotspot)?

Absolutely yes. You can use up to 30GB of data for tethering your phone to another device on Three's All-You-Can-Eat data SIMs.

If I take a 12-month contract, what happens if I want to leave early?

You've got 14 days after your purchase to send back your SIM and cancel free of charge. You'll only have to pay for usage up to that point.

If you're nervous about taking out a long contract, use the filters above to see just 1-month contracts. They're a little more expensive but you can always switch to a 12-month later and save.

More topics:

3 quick reasons to go with Three

Use your phone abroad for no extra cost
free roaming in 18 countries in Europe, America and beyond
Highly rated network
in YouGov surveys about the reliability of smartphone user's mobile providers
4G at no extra cost & tethering
on all tariffs as standard to use your phone as a personal hotspot
More topics:

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