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Compare Three Mobile & SIM only deals, upgrades, coverage, speeds, perks and more

  • best network for roaming 2018
  • Stream TV and music without using any data on select plans
  • Voted most reliable network for mobile internet
  • Free roaming in 71 locations

Top Three Mobile deals

Bestselling iPhone Deal
Apple iPhone 8 64GB Unlimited minutes, unlimited texts, 30GB data FREE 24 month contract £43.00 per month Buy now
Great for roaming
Bestselling Android Deal
Samsung Galaxy S8 64GB Unlimited minutes, unlimited texts, 4GB data FREE 24 month contract £25.00 per month Buy now
£50 cashback
Great for roaming
Bestselling SIM Only Deal
Three Mobile Multi SIM Unlimited minutes, unlimited texts, unlimited data 12 month contract £27.00 per month Buy now
Great for roaming

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Why choose Three Mobile?

best network for roaming 2018

Stream TV and music without using any data on select plans

Available on select plans, Three's Go Binge scheme lets you stream as much as content as you like from Netflix, Deezer, SoundCloud and TV Player without using any of your monthly data allowance.

Voted most reliable network for mobile internet

Three was named best network for reliability among smartphone users in a YouGov survey. It was also crowned best network of the year for data and international roaming, as well as best pay monthly network at the 2017 uSwitch awards.

Free roaming in 71 locations

Three customers on an Advanced Plan can use their monthly allowance of calls, texts and data for no extra cost in 71 destinations worldwide, including USA, Australia and Singapore.


Three offers extensive 3G and 4G coverage across the UK.


According to a network speed survey conducted by OpenSignal between 1st December 2017 and 28th February 2018, Three's average connection speed came in at 22.55Mbps.


Three’s range of benefits include:

  • Wuntu rewards app: The Wuntu app features regular giveaways and competitions, as well as money-off coupons.
  • Go Binge: Customers on Three's Advanced plans give you unlimited streaming on Netflix, Apple Music Deezer, TVPlayer and SoundCloud without using up any of your data. They also allow customers to use Snapchat as much as they like without using up any data. Find out more with our Go Binge FAQ.
  • Personal hotspot: Three allows customers on Advanced plans to use their allowance in full for tethering. So they can use their smartphone as a portable mobile broadband dongle to get online with other internet-enabled devices. This service is not included on Essential plans.

Three roaming

Three customers on cheaper, Essential plans can roam for no extra charge in 49 European locations with its Go Roam in Europe scheme.

If you’re on a more expensive Advanced plan, the inclusive roaming scheme, dubbed Go Roam Around the World, extends to 71 locations worldwide. These include Australia, Brazil, Israel, New Zealand, Sri Lanka and the USA.

*Want a fuller picture of international roaming on Three? We take a closer look with our guide. *

For an additional £5 per day, Three also offers the Data Passport add-on. This lets customers use as much data as they like.

Three customer service

Three customer support is open 8am-8pm Monday-Friday and 9am-6pm at weekends.

Three customers on pay monthly plans can get in touch with the company’s customer service division by calling 333 from their mobile. The call is free if you’re on an Advanced Plan, but will come out of your monthly allowance if you’re on an Essential Plan.

Alternatively, customers can call 0333 338 1001 from any other phone and will be charged at their standard rate.

Three also offers the option to get in touch via Livechat on its site.

The site is also home to a range of customer guides. Sample topics include setting up your mobile phone, as well as the correct procedures to follow if your mobile phone is lost or stolen.

Data rollover

Three does not allow customers to roll over unused data from month to month. So any data left over will be lost at the end of the month.

Mobile app

Three’s customer app is available for iPhone and Android and lets you sign up for add-ons for extra data, as well as see your usage and change your plan.

You can also find a store of all your recent bills, so you’ve got a record of your spending and usage from month to month.

Download the Three mobile app for iPhone.

Download the Three mobile app for Android.

Three does not offer a mid-contract early upgrade scheme that’s comparable to O2 Refresh or Tesco Mobile’s Anytime Upgrade.

However, customers on Three’s phone and contract plans are offered an upgrade with 30 days remaining on their contract.


Three’s Essential and Advanced phone-and-SIM and SIM-only deals are competitively priced. The latter are available as one-month, rolling contracts that offer flexibility, or as 12-month contracts.

Essential plans are cheaper than Advanced plans and typically start at less than £10 per month. That'll typically get you an allowance of 500MB of data per month and limited call minutes and texts.

The cheapest Advanced plans start at around £13 per month, with data allowances usually pegged at around 3GB-4GB per month. Expect unlimited calls and texts.

The chief difference between Essentials and Advanced plans is the range of benefits they offer. The best Three benefits, such as zero-data streaming with Go Binge and a wide-ranging inclusive roaming scheme, are reserved for Advanced plans.

Wifi calling

Three’s inTouch Wi-Fi calling service is on offer to all customers and allows them to call and text in the UK in locations where there’s no mobile signal.

Calls made using inTouch come out of customers’ pay monthly customers’ monthly calls allowance.

Tethering policy

Three allows customers on its Advanced Plans to use their entire monthly data allowance for tethering. So it’s possible to use your phone as a mobile broadband dongle to get online with other internet-enabled devices.

However, tethering isn’t allowed on Three’s cheaper Essential Plans.