Three is the UK’s challenger mobile network. Popular features include unlimited data plans with 5G at no extra cost and Go Roam (free roaming in 71 destinations).

ThreeIn recent years, Three has grown out of nowhere to become a major household name. The youngest of the UK’s four major mobile networks, they launched in March 2003. Since then, they’ve been paving the way for the smartphone revolution from launching the UK’s first 3G mobile network to introducing all-you-can-eat unlimited data plans.

Some of Three’s unique offerings include 5G at no extra cost on all plans and Go Roam which gives you free international roaming in 71 destinations. Three also has a range of home broadband plans which utilise 4G or 5G technology instead of using a landline or cable connection.

As of June 2019, Three has 11.6 million customers in the UK.

Three Coverage & Network: 5G, 4G & 3G Coverage Map & Speeds 2020

Three offers 5G coverage in 66 UK towns and cities, along with 99% population coverage on 3G & 4G.

Three Unlimited Data Review: 5G SIM & All-You-Can-Eat Data For £18/Mo

Three offers unlimited data from £18 per month with 5G coverage, roaming and personal hotspot.

Three SIM Only Deals: Exclusive Offers & Hidden 5G Ready SIM Cards

If you're looking to get a Three SIM-only deal, there are a number of hidden SIM card offers that will save you money on a 5G SIM-only deal.

Three Go Roam Review: Free Roaming in 71 Destinations (Feel At Home)

Three offers inclusive international roaming in 71 destinations including most of Europe, the USA, Australia, Brazil, Singapore and more.

Three Go Binge Review: Unltd Data For Netflix, Apple Music & More

Three's Go Binge is available from £8/month and gives you unlimited data for use on Netflix, Apple Music, Snapchat and more.

Three 5G: 5G Price Plans, Devices, Download Speeds & Coverage

Three offers 5G-ready mobile phone plans from £10/month, with 5G coverage in 66 UK towns and cities.

Three Pay As You Go Review: Data Pack Bundles From £10/Month

Three offers Pay As You Go bundles from £10/month with 5GB of data, unlimited minutes, unlimited texts and 5G at no extra cost.

Three's Data Reward SIM: 200MB Free Data Every Month

Three's Data Reward Pay As You Go SIM card gives you 200MB of free data every month. There's no need to top-up to get your free allowance.

Three's Essential Plans VS Advanced Plans: Review & Comparison

Three offers two types of price plan: Essential and Advanced. Find out how the plans compare on features like Feel At Home, Go Binge and Personal Hotspot.

Your Comments 6 so far

We'd love to hear your thoughts and any questions you may have. So far, we've received 6 comments from readers. You can add your own comment here.

  • This company it’s just let me down I am old customer and have to acount with them now my contract finish and ask for upgrade and ofer but they just told me you are not different with new customer and they give me ofer which is available for new customer now I just think 2 cancel both contracts and go with new network after 6 years they can Evan cut 4 pound of deal very ubset now

  • Steven J Parkes said:

    Hi Ken,

    I read your recommendations regularly. Generally I find the information very useful. However, I have to take issue with you on your continuing support of the 3 Network. As with many users, I found the offer of an unlimited 4G data bundle attractive. Having bought the bundle I then started using my phone. At first, all went well. I got a 4G signal every day for a week. At 12 Mbps and about 65 to 70 % appearance it is definitely not as good as the performance by EE. Given the promise of unlimited data access, this was acceptable. However, since that first week, the 4G signal has disappeared (currently three weeks).

    Contacting their office was a waste of time. They claimed that their transmitters were working. They then said that they would pass me on to their Technical Department. Having waited about five minutes, the phone call was cut off and nobody bothered to contact me. I then pursed the matter on the Internet and discovered that my problem is quite common with the 3 network.

    One explanation offered is that so many people have joined the network that 3 is unable to deliver on its somewhat inflated claim of unlimited data access. Having had such a poor experience, I no longer intend to use the 3 network. I think a caveat should be issued to users considering using this network.


    Steven J Parkes

    • Hi Steven,

      This is what happened to me. I logged initially good speeds around 8-12Mbits vs 70Mbits+ with EE for the first week then it dropped to virtually nothing after I had used around 10-20Gb data.

    • Buggerlugs replied:

      I moved to Three’s mobile broadband this week. Picked up the B535 router from my local store. I’m seeing around 20Mb/s to 30Mb/s average peaking up to 96Mb/s (wirelessly on my Xbox one updating) and that is with the internal aerial with the router upstairs sat on the corner of my desk.

      I get 5 bars of signal strength all day. It does however seem the bandwidth bounces up and down and certainly don’t maintain a steady top speed (like cable).

      Every time I do a speed test I get a different result but overall I’m very happy up to yet.

      I’ve ordered two flat white screw in aerials from eBay which are on route, so hopefully whilst my signal strength is good, the quality should be improved with them.

      I’ll report back my findings once they arrive.

  • Hi Ken,
    Recently posted about the Three £10 All in one offer, which we took and brought 3 x Three sim cards to use whilst in the US. After only a few days there is no credit on any of the sim cards and have certainly not used 100 minutes. We entered the code given to us on the receipt at the Three shop and used the phone on and off for a couple of days but as I say not to the extent of 100 minutes. Now in the US with no minutes or texts across three sim cards. Anyone got any ideas ?

    • Hi Ian,
      Thanks for your comment. Have you double checked that an All in One bundle has been added to your account? You can do this by visiting If everything has been set up correctly, you’d see zero credit on your account and a 30-day bundle which should tell you how many minutes/texts/MB are remaining on the bundle.

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