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Three Unlimited Data Plans

Three unlimited data SIM Only deals

  • Save on an unlimited data SIM Only deal on Three
  • A huge choice of great value plans
  • Choose from a 1-month, 12-month or 24-month plan
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Three
Three SIM Deal

24 month contract

unlimited minutes

unlimited texts

Unlimited

5G data

£20.00

a month

was £26.00

Exclusive deal
Three
Three SIM Deal

12 month contract

unlimited minutes

unlimited texts

Unlimited

5G data

£21.00

a month

was £28.00

Exclusive deal
Three
Three SIM Deal

1 month contract

unlimited minutes

unlimited texts

Unlimited

5G data

£31.00

a month

Mobile networks may increase prices in line with the consumer price index each year. Please check individual network's terms before purchasing.
  • Overview

What unlimited data plans does Three offer?

Three lets you choose from a 1-month rolling unlimited data SIM Only plan, a 12-month unlimited data SIM Only plan, and a 24-month unlimited data SIM Only plan. Pick a shorter duration and there’s less commitment, but pick a longer one and you typically won’t pay as much each month.

These plans all also include unlimited minutes and texts, 5G, and access to the Three+ app, which lets you claim rewards and discounts from other brands and stores, along with offering presale tickets to festivals and shows.

But if you pick a Value plan then you additionally get a Paramount Plus subscription for half the length of your plan, and either 14 days of free roaming (in 71 worldwide destinations) on a 12-month plan, or 28 days of free roaming on a 24-month plan.

Finally, there are Complete plans, which are similar to Value plans but give you a Paramount Plus subscription for the full duration of the plan, and give you either 28 free roaming days (if you pick a 12-month plan) or 56 free roaming days on a 24-month plan. Notably Value and Complete plans aren’t available on 30-day durations.

If you need a new phone, then you can also get unlimited data with the same assortment of perks on a Three phone contract.

Why should I choose Three unlimited data?

As you can see above, there’s a great assortment of different unlimited data SIM Only plans available on Three, with various different extras and lasting varying different lengths of time. So you should be able to find a plan that you’re happy with.

Plus, Three offers some of the best 5G performance you’ll get on a UK network according to various independent tests, including 2023 reports from both Opensignal and RootMetrics. So you can make use of all that data at the highest possible speeds.

Is Three unlimited data really unlimited?

Yes, in the UK at least Three’s unlimited data plans really are unlimited. Unlike some networks there are no fair usage restrictions and no speed caps.

However, when roaming there’s a 12GB monthly cap, and on some plans you’ll also have to pay to roam.

Can you tether with Three unlimited data?

Yes, you can tether with unlimited data on Three, and there are no restrictions when doing so, meaning you can use your phone to get as many devices online as you want, and use as much data for this as you want.

Can you use Three unlimited data abroad?

You can use your allowances when roaming in 71 worldwide destinations on Three, however, there’s a limit of 12GB of data per month when roaming. Also, unless you’re on a Value or Complete plan (along with Pay As You Go and certain older plans), you’ll have to pay a small daily charge to roam abroad.

Can you get unlimited data on Three Pay As You Go?

Yes, you can get a Pay As You Go pack with unlimited data on Three, and this also comes with unlimited minutes and texts.

It additionally includes 5G, access to the Three+ rewards app, and inclusive roaming (up to 12GB) in 71 worldwide destinations.

Are there any alternatives?

As well as Three, you can also get unlimited data on EE, O2, Vodafone, Asda Mobile, Giffgaff, iD Mobile, Lebara, Lyca Mobile, Smarty, Tesco Mobile, Virgin Mobile, and VOXI.

For more information about unlimited data plans on all of these networks, check out our full unlimited data guide.

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