Three Unlimited Data Plans

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, as well as inclusive roaming in 49 European destinations.

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 inclusive roaming in over 160 worldwide destinations.

Notably Value and Complete plans aren’t available on 30-day durations, and of course Complete plans are the most expensive, while Lite plans are the cheapest.

If you need a new phone, then you can also get unlimited data with the same assortment of perks on a Three phone contract, along with the addition of an up to three-year extended warranty on Value and Complete plans, and screen repair thrown in with 24-month Complete plans.

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 a 2024 report from Opensignal and a 2025 report from Speedtest. So you can make use of all that data at the highest possible speeds.

And with Three now having merged with Vodafone, its speeds and coverage are likely to further improve.

Plus, you’ll also get Wi-Fi Calling, 4G Calling, spending caps, family plans, and the option of an eSIM with your Three plan.

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 either 49 European or over 160 worldwide destinations on Three (depending on your plan), 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 30GB) in over 70 worldwide destinations.

Are there any alternatives?

As well as Three, you can also get unlimited data on EE, O2, Vodafone, 1pMobile, Asda Mobile, Giffgaff, iD Mobile, Lebara, Lyca Mobile, Sky Mobile, Smarty, Talkmobile, Tesco Mobile, and VOXI.

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