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Three mobile plans explained

What can you get on Three? Uh, everything. Any kind of deal you could possibly want for a phone or tablet is probably available from Three.

For a start, it offers plenty of phone contracts, with a massive variety of handsets to choose from, some of which have nothing to pay upfront. Whether you want the latest iPhone or something on more of a budget, you're covered.

Or, if it's SIM-only you're after, Three has a nice set of 12-month, 30-day, and pay-as-you-go plans.

Both its phone and SIM-only contracts come in a wide range of tariffs, from 500MB of data and 200 minutes per month all the way up unlimited (All-you-can-eat) everything. Unlimited texts are included in every plan too.

And its unlimited data really is unlimited! There's a fair usage cap of 1000GB per month, but you'll need to download 1.4GB per hour every single day to reach that.

Three's plans all include some neat extras thrown in. There's Feel at Home Around the World, which lets you use your phone abroad in more than 70 destinations at no extra cost; free calls to Three's customer services; and a personal hotspot allowance. Some plans even let you use streaming music services without using your data.

You can also get mobile broadband devices, dongles, and data-only SIMs for tablets from Three.

Three mobile coverage

You'll get signal almost anywhere - its network covers 99% of the population. 4G coverage isn't quite as good, but you should be fine in most towns and cities. Make sure you can get signal in your area before you order by using Three's coverage checker.

Read more about mobile coverage.

What's good about Three?

  • Huge range of deals and plans - whatever you're after, Three has probably got it
  • The only way to get truly unlimited mobile data in the UK
  • Low up-front costs on handsets
  • Plans aren't bad value
  • 'All-you-can-eat' texts standard on all plans

What's bad about Three?

  • Not the widest coverage in the country
  • Not the cheapest mobile provider either
  • Tethering isn't allowed on all plans
  • Not many perks or extras - there's no O2 Priority or free music streaming subscriptions, for instance


  1. If I switch, can I keep my mobile number?

    Yes you can. All you have to do is ask your old network for your Porting Authorisation Code (PAC) before your contract is up. Then give the PAC - likely a nine-digit number - to your new provider and you’ll usually be able to use your old number within a working day.

    For more info, see our guide: Can I keep my mobile number?

  2. How do I switch mobile contracts?

    First, pick a new mobile contract by comparing different packages on our site, and click through to sign up to one that looks good.

    Then, simply contact your current provider to cancel, and switch to the new contract. Providers should walk you through the process when you sign up.

    Compare mobile deals here

  3. Can I use my mobile phone abroad?

    It is possible to use your phone abroad, but before you can do so you may have to activate roaming with your network operator. Different countries incur different charges, but your operator should send you a message about roaming prices upon your arrival. And remember, unlike at home, you may be charged for receiving calls as well as making them.

    If you're travelling within the EU, you can use your usual monthly allowance at no extra cost - whatever network you're with.

    See our guide to using your phone abroad for more info.

  4. How do I check network coverage?

    All networks have a coverage checker on their websites, so check there as your first port of call. These give a good indication of whether you will get a signal in different parts of the country. It’s worth noting that these offer a simplified view of coverage and aren't necessarily 100% accurate, but they give you a good indication all the same.

    See our guide to mobile coverage for more info