Unlimited data plans

A range of unlimited data plans are available, including SIM plans, Pay monthly phones, Pay As You Go and Home Broadband.

You can find them all in the comparison table above, which will enable you to find the perfect deal.

Unlimited Data SIM plans

Three offer a range of unlimited data SIM Only plans, which are available on 24, 12 or 1 month contracts.

Like all Three's unlimited plans they are truly unlimited with no speed or usage restrictions. They also come with unlimited tethering, free roaming abroad and are 5G Ready at no extra cost.

Switching is easy and you can keep your existing number. You don't need to worry about which SIM size you require as you will get a Trio SIM (Standard, Micro and Nano) combined.

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.

Phones with unlimited data

Three offer a range of Pay Monthly phones with unlimited data, including the latest Apple iPhones and Samsung phones.

5G phones with unlimited data are also available and come with 5G at no extra cost, including the Samsung Galaxy S20 5G, Huawei P40 Pro and many more. 

Like of all Three's unlimited plans they come with free roaming abroad, unlimited tethering and have no speed or usage restrictions.

Unlimited Broadband

Unlimited Home Broadband and Unlimited mobile broadband are also both available, which are great for those looking to get multiple devices online at home and on the move.

Mobile broadband devices are battery powered and are great for getting internet on the move, while Home Broadband requires mains power and is designed as an alternative to traditional fibre broadband. The advantages are that you don't require a landline or engineer visit.

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. However, it should be noted that the plans are for personal use only, not commercial usage.

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.

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 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.