• UK's fastest 5G network 3 years in a row
  • Fantastic 4G and 5G coverage
  • Flexible Pay Monthly plans
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iPhone 15 / 128GB Green

Apple iPhone 15
  • Unlimited minutes
  • Unlimited texts
  • 150 GB data

36 month contract on Three

  • £75.00 upfront
  • £26.61 per month
Prices may change during contract More info

iPhone 15 Plus / 128GB Black

Apple iPhone 15 Plus
  • Unlimited minutes
  • Unlimited texts
  • 150 GB data

36 month contract on Three

  • £95.00 upfront
  • £30.50 per month
Prices may change during contract More info

iPhone 15 Pro / 128GB Blue Titanium

Apple iPhone 15 Pro
  • Unlimited minutes
  • Unlimited texts
  • 150 GB data

36 month contract on Three

  • £35.00 upfront
  • £35.17 per month
Prices may change during contract More info

Three – A reliable network with great customer benefits

Three is one of the UK’s top mobile network providers, offering a fantastic and reliable service with competitive pricing and a focus on their customers.

As part of the ‘big four’, Three offers their services to over 10.3 million subscribers, delivering the UK’s fastest 5G network with nationwide coverage on 4G.

How does Three work?

Along with O2, Vodafone and EE, Three makes up part of the ‘big four’ networks, which means they are the main providers in the nation that MVNO providers (mobile virtual network operators) can then piggyback on.

Three claims to boast the fastest 5G network in the UK, a claim which they may just be able to back up.

They have been strong pioneers of the next generation of mobile connectivity since 2G was the norm, and as such as a standard for delivering fast and reliable speeds to the vast majority of the nation.

What network does Three use?

Three use their own network to provide 4G and 5G. As mentioned, they also supply their network to various MVNOs, including iD Mobile, SMARTY and Superdrug Mobile.

Three stake a claim to having the fastest 5G network in the UK, and it’s not just something they simply say. They have been named the UK’s fastest 5G network three years in a row from Ookla, a global broadband speed test web service.

Three coverage

Three’s network has a strong 99% UK coverage for their 4G network and claims to have more 5G than any other UK network.

A last check from August 2023 puts Three’s 5G coverage now at 61% and rising; however, it has slowed down potentially due to the easier dense urban locations now largely being complete.

Three even boasts a 4G or 5G connection at some of London’s major underground stations, keeping you connected even during your commute.

Three benefits

  • Reliable network with fast speeds
  • Fantastic 4G and 5G coverage
  • Engaging help community
  • Flexibility on plans
  • Nice perks & extras

Three plans

As with all mobile providers, Three offers the standard options for their plans - Pay Monthly, SIM-only and Pay as You Go.

Three Pay Monthly

With Three’s Pay Monthly, you have the freedom to choose your plan. Simply find the phone you want and go through the options available to suit your needs and how much you want to pay each month.

This is the best option if you like to get the latest releases when they come out, and the ability to choose your plan to suit you makes it ideal.

If you’re not too fussed about the flexibility though and want a good deal on their pre-made plans, check out some of the devices above. Each will come with several options to choose from so you can find one that works for you.

Three SIM-only

SIM-only plans are perfect for those who are happy with their current device but want some stability with their SIM.

We offer Three SIM-only plans for as little as £5, and almost all plans come with unlimited calls and texts, with the ones that don’t being simply data-only SIMs.

Three Pay-as-You-Go

Similar to SIM-only plans but without the commitment, PAYG means you aren’t stuck into a contract that you may regret down the road. You top up with the data you need when you need it and you’re good to go.

Three offers PAYG phones too, where you purchase the device you want with them and then choose the data pack you need.

Three roaming

Three does offer a somewhat limiting roaming service compared to that of the other ‘big four’ networks. Go Roam, their roaming service, allows you to call, text, and use your data in 71 destinations around the world.

You pay £2 a day for Go Roam in Europe and £5 a day for Go Roam Around the World. You pay that fee to be able to unlock your UK allowance of calls, texts and data.

With Go Roam in Europe, you can use your data up to the fair use limit, which is set at 12GB.

Three Mobile Broadband

Three are more than a mobile provider, as they also offer excellent mobile broadband service, which differs from standard broadband.

Mobile broadband is an alternative to standard home broadband, delivering a connection via 4G or 5G (depending on your coverage).

Three’s 5G hub provides average download speeds of 150Mbps, which is just as good as most top standard broadband providers’ FTTP options.

Be sure to check out what’s available with Three Mobile Broadband on our sister site, Broadband Finder .

Three customer service

Three has some excellent customer support services that are able to assist you when you need some help.

Three Community is a place to learn, support and collaborate with other Three customers, providing quick assistance to any queries you may have. It’s useful for any general questions you may have.

Three also runs a unique service called Three Live, which is a live broadcast that Three runs from their mobile app where their presenters are on hand to answer anything you have to ask about their products and services.

If you want something a bit more personal, you can chat to a member of their help team view a live chat, available 8am - 10pm Monday to Friday and 9am - 8pm Saturday and Sunday.

Three contact number

If you’re looking to talk to someone, you can phone up their customer line as well.

If you’re calling from a Three phone, you use 333. From other phones, the number is 0333 338 1001. 

If you’re calling from abroad, the number to call is +44 7782 333 333.

Three – What we think

Three are a very solid provider, offering a brilliant service with fast speeds and fantastic coverage.

While we aren’t the biggest fans of their Go Roam service, they make up for it in other areas, including the flexibility to customise your plan to suit your needs.

All in all, Three are one of the best providers in the UK for good reason.



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Last updated on the 27th of May at 6:21pm with 92,821 deals.