Unlimited data plans

Unlimited Data Pay As You Go plans

Three offer two Pay As You Go add-ons with unlimited data, one of which costs £35 and lasts 30 days, the other costs £90 and lasts 90 days.

Both unlimited data add-ons include unlimited minutes and texts for the duration and the 30-day one includes a free 1 month subscription to the likes of Xbox Game Pass, Rakuten or Headspace. Plus, you’ll also receive reward points which help you work towards additional subscriptions and discounts.

Frequently Asked Questions

Is Three unlimited data really unlimited?

Yes, Three unlimited data is truly unlimited with no speed or usage restrictions in the UK, so you never have to worry about unexpected bills or running out of data again.

It should be noted that the plans are for personal use only, not commercial usage, so if you use more than 1000GB in a month your data usage may be investigated for commercial use. However, if you have only been using the data for your own personal use you have nothing to worry about and it's also very unlikely that you’ll ever get anywhere close to the cap, even if you use your phone as your main or only internet device.

Three Unlimited Fair Usage Policy

Unlimited data gives you worry free internet use. Even if you used your phone for every minute of every day you could only use, subject to TrafficSense™, around 1000GB each month. We may use this cap to identify inappropriate use of the service, such as commercial use, which isn't permitted under our terms and conditions.

When roaming you can only use 19GB data per month in Europe and 12GB data in Go Roam around the World destinations.

Can I use unlimited data when roaming abroad?

Yes, Three allows you to use your data abroad in 71 international destinations at no extra cost.

However there are some restrictions, including the use of data, which is capped at 19GB when in a Go Roam in Europe destination or 12GB when in a Go Roam Around The World destination. But in most cases that should still be more than enough for even the longest of holidays. Note that if you’re on Pay As You Go then the cap in Europe is 15.1GB.

Those who need unlimited data when abroad have the option of purchasing a Data Passport add-on which costs £5 a day. That gives you unlimited data in 89 countries across the world.

Is tethering allowed on Three's unlimited data plans?

Yes, unlimited tethering over a personal hotspot is included on unlimited data plans. You can use any or all of your data allowance to tether in the UK, which means with unlimited data means there’s no limit.

You can also tether in Go Roam in Europe destinations, though there’s a 19GB cap there. Tethering isn’t allowed in Go Roam Around the World locations unless you purchase a Data Passport (at a cost of £5 per day).

Are Three's unlimited data plans 5G Ready?

Yes, all Three's Pay Monthly SIM Only plans including those with unlimited data are 5G Ready at no extra cost.

When Three's 5G network rolls out in October 2019 all existing and new customers will be able to access 5G, although they will need to have a 5G phone and be in a 5G coverage area.

Can you get unlimited mobile broadband plans?

Yes, Three offer unlimited mobile broadband plans. Currently, you can get unlimited data with a Huawei Mobile WiFi E5573bs-322 router, Huawei B535 WebBox or the Huawei AI Cube Home Broadband Router.

What other networks offer unlimited data plans?

As well as Three's a number of other networks offer unlimited data plans, but Three offer great value with 5G at no extra cost, no speed restrictions and come with worldwide roaming.

The other options include Vodafone, who offer unlimited data, but have speed limits on all but the most expensive plan. EE also offer unlimited data, and even give you swappable benefits with your contract, but prices are high. O2 also offer unlimited data, but prices are significantly higher than Three and they aren't 5G ready.

GiffGaff also offer unlimited data add-ons, but speeds are capped after using 40GB of data to just 384Kbits/sec, between 8am and midnight, which is slower than 3G download speeds. Virgin Mobile meanwhile offers an unlimited data SIM plan but only for existing Virgin Broadband and TV customers.

Then there’s Smarty, which has an unlimited data option but only for SIM Only, while Lycamobile offers unlimited data but caps you at speeds of 128kbps after 9GB and doesn’t allow tethering.

What is TrafficSense?

TrafficSense is Three's management of data traffic and is a way of ensuring the best possible mobile internet experience is given to users.

In general you won’t notice this at work, the aim is to give you a smooth experience and if that’s happening then TrafficSense is doing its job. However, in order to achieve that some types of data use will see small restrictions at certain times. For example, in Go Roam Around the World locations Three only offers streaming at standard definition, as well as reducing the speed of P2P and VPN services.

TrafficSense may also be noticeable in times of heavy congestion or network faults, at which point restrictions and prioritisations may be used to ensure the network continues to run smoothly.

The information contained on this website has been written to assist our readers. We do not represent Three or speak on its behalf and are entirely independent of Three.