Before signing up for a new phone deal, read our review of Three to see how it scored in our exclusive mobile network customer satisfaction survey.
We spoke to more than 3,900 real customers from 15 of the biggest phone providers, including EE, O2, Vodafone and Three. They told us exactly what they thought of their phone company, from the customer service on offer to the value for money they get.
In this in-depth review of Three mobile, we'll:
Three customer satisfaction survey results
Ease of contacting
Value for money
Table notes: Results based on an online survey of 3,958 members of the public in February 2021.
Three offers 3G, 4G and, more recently, 5G coverage, although its lack of a 2G network means that if there's no 3G signal, then calls will drop out (this isn't the case for EE, O2 or Vodafone).
In our latest analysis of 4G phone coverage, performed in conjunction with coverage experts RootMetrics, we found that the download speeds offered by Three lag far behind the speeds EE and Vodafone customers experience, although overall performance is a closer contest.
You can check coverage where you live by using our . Simply enter your postcode into the map and it will tell you how good Three's signal is in your area, as well as comparing it with the other providers.
Three's pay-monthly deals are aimed at people who want to surf the web on their phone, and all come with a data package, ranging from 1GB to an unlimited allowance.
Giving you unlimited data isn't as rare as it used to be but Three includes 5G usage in all plans over 4GB, and this makes Three an appealing option if you're a very heavy user.
Three has decreased its range of benefits in recent years but still offer 'Go Roam Around The World', which gives you access to up to 12GB of data and unlimited minutes and texts to UK and EU numbers.
Alternatively, you can get help and advice by calling Three's customer services on 333 (from a Three mobile phone) or 0333 338 1001.
Which? is independent – we work for you, the consumer, so you can be sure that our recommendations are only influenced by our test and survey results. We're not influenced by third parties and we don't accept freebies from product manufacturers or retailers. We buy all the products that we test ourselves, so our advice helps you to make the right choice first time and avoid costly mistakes.