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Mobile phone provider reviews

Three mobile review

By Hamse Yusuf

Article 10 of 13

Put us to the test

Our Test Labs compare features and prices on a range of products. Try Which? to unlock our reviews. You'll instantly be able to compare our test scores, so you can make sure you don't get stuck with a Don't Buy.

We regularly survey thousands of mobile phone customers so we can tell you exactly how Three compares to other mobile phone providers.

How good is Three mobile? 2019 Which? mobile provider satisfaction survey

Before signing up for a new phone deal, read our review of Three to see how it did in our regular mobile phone satisfaction survey.

In our latest survey we spoke to more than 6,100 real customers from 13 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.

Three customer satisfaction survey results
Recommended Provider Customer service Ease of contacting Value for money Incentives Customer score
Subscriber only content Subscriber only content Subscriber only content Subscriber only content Subscriber only content Subscriber only content
Table notes: Ratings and scores based on a survey of Which? members in January and February 2019.

In this in-depth review of Three mobile, we'll:

  • give you a full breakdown of how its customers rated it for key factors, including customer service, value for money and incentives.
  • report quotes from real Three mobile customers on their experiences.
  • tell you whether it's a Which? Recommended Provider.

Only logged-in Which? members can view the results in the table below. If you’re not yet a member, you can get instant access by joining Which? today.

How good is Three's mobile coverage?

Three offers 3G and 4G 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 3G and 4G phone coverage, performed in conjunction with coverage experts OpenSignal, we found that Three offers very good 3G and 4G download speeds. However, customers using the Three network are the least likely to be able to access a 4G signal.

Read the full analysis in our guide, Which mobile phone network has the best coverage?.

You can check coverage where you live by using our free interactive coverage map. 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 mobile deals and incentives

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, from 500MB to an unlimited allowance.

Giving you unlimited data is very rare, and this makes Three an appealing option if you are a very heavy user. Be aware, though, that there is a limit if you use your smartphone as a modem to connect other devices such as laptops and tablets (also known as tethering).

All Three Sims that have more than 12GB come with Go Binge, which allows you to use certain apps such as Netflix and Apple Music without using up your data.   

Three has one pay-as-you-go (PAYG) deal - its 321 tariff. Prices on this deal are very good value, with calls costing just 3p a minute, texts 2p each and data 1p/MB (you can also buy bundles of minutes, texts and data). Consequently, most PAYG customers we surveyed spent less than £10/month.

Three stores

Three is a well-established phone provider and has a physical presence on many UK high streets - you can find your nearest shop using the Three store locator.

Alternatively you can get help and advice by calling Three's customer services on 333 (from a Three mobile phone) or 0333 300 3333.

Complaints about Three

Telecoms regulator Ofcom regularly publishes information on the number of complaints it gets about the main mobile providers.

In its latest report, covering the first quarter of 2019 (January to March), Three generated a below-average level of complaints – three per 100,000. While it can't match Tesco Mobile's incredibly low rate (one per 100,000 customers), it's half the level of complaints generated by the worst offenders, Vodafone and Virgin Mobile (six per 100,000).

Read in-depth reviews of all the major phone networks in our mobile phone providers guide.

Recommendations you can trust

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 don't take advertising and we buy all the products that we test ourselves.