Three SIM Only Deals

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  • 263b6495af
    Three SIM
    Three SIM
    • £48.00 cashback by redemption
    1GB data
    • Unlimited minutes
    • Unlimited texts
    Three
    Contract months:
    24
    Total ownership:
    £96.00
    Upfront:
    FREE
    Monthly:
    £6.00
    See deal
    Sold by Fonehouse
    See deal
    Sold by Fonehouse
    Three SIM
    Three SIM
    Three
    1GB data Unlimited mins + texts
    • £48.00 cashback by redemption
    Contract months:
    24
    Total ownership:
    £96.00
    Upfront:
    FREE
    Monthly:
    £6.00
    Save
    See deal
    Sold by Fonehouse
  • bbd080d4de
    Three SIM
    Three SIM
    8GB data
    • Unlimited minutes
    • Unlimited texts
    Three
    Contract months:
    12
    Total ownership:
    £84.00
    Upfront:
    FREE
    Monthly:
    £7.00
    See deal
    Choose a retailer
    • 1st position Sold by:
      Fonehouse
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    • 2nd position Sold by:
      Metrofone
      Open in a new window
    • 3rd position Sold by:
      Mobile Phones Direct
      Open in a new window
    • 4th position Sold by:
      buymobiles.net
      Open in a new window
    • 5th position Sold by:
      Reward Mobile
      Open in a new window
    Available from 5 retailers
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    • 1st position Sold by:
      Fonehouse
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    • 2nd position Sold by:
      Metrofone
      Open in a new window
    • 3rd position Sold by:
      Mobile Phones Direct
      Open in a new window
    • 4th position Sold by:
      buymobiles.net
      Open in a new window
    • 5th position Sold by:
      Reward Mobile
      Open in a new window
    Available from 5 retailers
    Three SIM
    Three SIM
    Three
    8GB data Unlimited mins + texts
    Contract months:
    12
    Total ownership:
    £84.00
    Upfront:
    FREE
    Monthly:
    £7.00
    Save
    See deal
    Choose a retailer
    • 1st position Sold by:
      Fonehouse
      Open in a new window
    • 2nd position Sold by:
      Metrofone
      Open in a new window
    • 3rd position Sold by:
      Mobile Phones Direct
      Open in a new window
    • 4th position Sold by:
      buymobiles.net
      Open in a new window
    • 5th position Sold by:
      Reward Mobile
      Open in a new window
    Available from 5 retailers
  • d788d8d270
    CompareDial Exclusive
    Three SIM
    Three SIM
    25GB data
    • Unlimited minutes
    • Unlimited texts
    Three
    Contract months:
    12
    Total ownership:
    £96.00
    Upfront:
    FREE
    Monthly:
    £8.00
    See deal
    Sold by Three
    See deal
    Sold by Three
    Three SIM
    Three SIM
    Three
    25GB data Unlimited mins + texts
    Contract months:
    12
    Total ownership:
    £96.00
    Upfront:
    FREE
    Monthly:
    £8.00
    Save
    See deal
    Sold by Three
  • a1ce426fcf
    Three SIM
    Three SIM
    • £84.00 cashback by redemption
    8GB data
    • Unlimited minutes
    • Unlimited texts
    Three
    Contract months:
    24
    Total ownership:
    £108.00
    Upfront:
    FREE
    Monthly:
    £8.00
    See deal
    Sold by Fonehouse
    See deal
    Sold by Fonehouse
    Three SIM
    Three SIM
    Three
    8GB data Unlimited mins + texts
    • £84.00 cashback by redemption
    Contract months:
    24
    Total ownership:
    £108.00
    Upfront:
    FREE
    Monthly:
    £8.00
    Save
    See deal
    Sold by Fonehouse
  • 17cd818140
    CompareDial Exclusive
    Three SIM
    Three SIM
    25GB data
    • Unlimited minutes
    • Unlimited texts
    Three
    Contract months:
    24
    Total ownership:
    £192.00
    Upfront:
    FREE
    Monthly:
    £8.00
    See deal
    Sold by Three
    See deal
    Sold by Three
    Three SIM
    Three SIM
    Three
    25GB data Unlimited mins + texts
    Contract months:
    24
    Total ownership:
    £192.00
    Upfront:
    FREE
    Monthly:
    £8.00
    Save
    See deal
    Sold by Three
  • 48d30e3cd3
    Three SIM
    Three SIM
    • £48.00 cashback by redemption
    12GB data
    • Unlimited minutes
    • Unlimited texts
    Three
    Contract months:
    12
    Total ownership:
    £60.00
    Upfront:
    FREE
    Monthly:
    £9.00
    See deal
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    • 1st position Sold by:
      Fonehouse
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    • 2nd position Sold by:
      Metrofone
      Open in a new window
    Available from 2 retailers
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    • 1st position Sold by:
      Fonehouse
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    • 2nd position Sold by:
      Metrofone
      Open in a new window
    Available from 2 retailers
    Three SIM
    Three SIM
    Three
    12GB data Unlimited mins + texts
    • £48.00 cashback by redemption
    Contract months:
    12
    Total ownership:
    £60.00
    Upfront:
    FREE
    Monthly:
    £9.00
    Save
    See deal
    Choose a retailer
    • 1st position Sold by:
      Fonehouse
      Open in a new window
    • 2nd position Sold by:
      Metrofone
      Open in a new window
    Available from 2 retailers
  • d26c1e85b7
    Three SIM
    Three SIM
    • £48.00 cashback by redemption
    30GB data
    • Unlimited minutes
    • Unlimited texts
    Three
    Contract months:
    12
    Total ownership:
    £72.00
    Upfront:
    FREE
    Monthly:
    £10.00
    See deal
    Choose a retailer
    • 1st position Sold by:
      Fonehouse
      Open in a new window
    • 2nd position Sold by:
      Metrofone
      Open in a new window
    Available from 2 retailers
    See deal
    Choose a retailer
    • 1st position Sold by:
      Fonehouse
      Open in a new window
    • 2nd position Sold by:
      Metrofone
      Open in a new window
    Available from 2 retailers
    Three SIM
    Three SIM
    Three
    30GB data Unlimited mins + texts
    • £48.00 cashback by redemption
    Contract months:
    12
    Total ownership:
    £72.00
    Upfront:
    FREE
    Monthly:
    £10.00
    Save
    See deal
    Choose a retailer
    • 1st position Sold by:
      Fonehouse
      Open in a new window
    • 2nd position Sold by:
      Metrofone
      Open in a new window
    Available from 2 retailers
  • 82b1f63bfb
    Three SIM
    Three SIM
    • £96.00 cashback by redemption
    12GB data
    • Unlimited minutes
    • Unlimited texts
    Three
    Contract months:
    24
    Total ownership:
    £144.00
    Upfront:
    FREE
    Monthly:
    £10.00
    See deal
    Sold by Fonehouse
    See deal
    Sold by Fonehouse
    Three SIM
    Three SIM
    Three
    12GB data Unlimited mins + texts
    • £96.00 cashback by redemption
    Contract months:
    24
    Total ownership:
    £144.00
    Upfront:
    FREE
    Monthly:
    £10.00
    Save
    See deal
    Sold by Fonehouse
  • b7ee5e5b7a
    CompareDial Exclusive
    Three SIM
    Three SIM
    120GB data
    • Unlimited minutes
    • Unlimited texts
    Three
    Contract months:
    12
    Total ownership:
    £144.00
    Upfront:
    FREE
    Monthly:
    £12.00
    See deal
    Sold by Three
    See deal
    Sold by Three
    Three SIM
    Three SIM
    Three
    120GB data Unlimited mins + texts
    Contract months:
    12
    Total ownership:
    £144.00
    Upfront:
    FREE
    Monthly:
    £12.00
    Save
    See deal
    Sold by Three
  • 5282451f9a
    CompareDial Exclusive
    Three SIM
    Three SIM
    120GB data
    • Unlimited minutes
    • Unlimited texts
    Three
    Contract months:
    24
    Total ownership:
    £288.00
    Upfront:
    FREE
    Monthly:
    £12.00
    See deal
    Sold by Three
    See deal
    Sold by Three
    Three SIM
    Three SIM
    Three
    120GB data Unlimited mins + texts
    Contract months:
    24
    Total ownership:
    £288.00
    Upfront:
    FREE
    Monthly:
    £12.00
    Save
    See deal
    Sold by Three
  • 9c44647373
    Three SIM
    Three SIM
    • £96.00 cashback by redemption
    30GB data
    • Unlimited minutes
    • Unlimited texts
    Three
    Contract months:
    24
    Total ownership:
    £240.00
    Upfront:
    FREE
    Monthly:
    £14.00
    See deal
    Sold by Fonehouse
    See deal
    Sold by Fonehouse
    Three SIM
    Three SIM
    Three
    30GB data Unlimited mins + texts
    • £96.00 cashback by redemption
    Contract months:
    24
    Total ownership:
    £240.00
    Upfront:
    FREE
    Monthly:
    £14.00
    Save
    See deal
    Sold by Fonehouse
  • d8d6a98bf6
    Three SIM
    Three SIM
    • £108.00 cashback by redemption
    100GB data
    • Unlimited minutes
    • Unlimited texts
    Three
    Contract months:
    12
    Total ownership:
    £72.00
    Upfront:
    FREE
    Monthly:
    £15.00
    See deal
    Choose a retailer
    • 1st position Sold by:
      Fonehouse
      Open in a new window
    • 2nd position Sold by:
      Metrofone
      Open in a new window
    Available from 2 retailers
    See deal
    Choose a retailer
    • 1st position Sold by:
      Fonehouse
      Open in a new window
    • 2nd position Sold by:
      Metrofone
      Open in a new window
    Available from 2 retailers
    Three SIM
    Three SIM
    Three
    100GB data Unlimited mins + texts
    • £108.00 cashback by redemption
    Contract months:
    12
    Total ownership:
    £72.00
    Upfront:
    FREE
    Monthly:
    £15.00
    Save
    See deal
    Choose a retailer
    • 1st position Sold by:
      Fonehouse
      Open in a new window
    • 2nd position Sold by:
      Metrofone
      Open in a new window
    Available from 2 retailers
  • 48224986c3
    Three SIM
    Three SIM
    • £72.00 cashback by redemption
    250GB data
    • Unlimited minutes
    • Unlimited texts
    Three
    Contract months:
    12
    Total ownership:
    £120.00
    Upfront:
    FREE
    Monthly:
    £16.00
    See deal
    Choose a retailer
    • 1st position Sold by:
      Fonehouse
      Open in a new window
    • 2nd position Sold by:
      Metrofone
      Open in a new window
    Available from 2 retailers
    See deal
    Choose a retailer
    • 1st position Sold by:
      Fonehouse
      Open in a new window
    • 2nd position Sold by:
      Metrofone
      Open in a new window
    Available from 2 retailers
    Three SIM
    Three SIM
    Three
    250GB data Unlimited mins + texts
    • £72.00 cashback by redemption
    Contract months:
    12
    Total ownership:
    £120.00
    Upfront:
    FREE
    Monthly:
    £16.00
    Save
    See deal
    Choose a retailer
    • 1st position Sold by:
      Fonehouse
      Open in a new window
    • 2nd position Sold by:
      Metrofone
      Open in a new window
    Available from 2 retailers
  • acfec3f20a
    Three SIM
    Three SIM
    • £96.00 cashback by redemption
    Unlimited data
    • Unlimited minutes
    • Unlimited texts
    Three
    Contract months:
    12
    Total ownership:
    £108.00
    Upfront:
    FREE
    Monthly:
    £17.00
    See deal
    Choose a retailer
    • 1st position Sold by:
      Fonehouse
      Open in a new window
    • 2nd position Sold by:
      Metrofone
      Open in a new window
    Available from 2 retailers
    See deal
    Choose a retailer
    • 1st position Sold by:
      Fonehouse
      Open in a new window
    • 2nd position Sold by:
      Metrofone
      Open in a new window
    Available from 2 retailers
    Three SIM
    Three SIM
    Three
    Unlimited data Unlimited mins + texts
    • £96.00 cashback by redemption
    Contract months:
    12
    Total ownership:
    £108.00
    Upfront:
    FREE
    Monthly:
    £17.00
    Save
    See deal
    Choose a retailer
    • 1st position Sold by:
      Fonehouse
      Open in a new window
    • 2nd position Sold by:
      Metrofone
      Open in a new window
    Available from 2 retailers
  • 1dcd5dcf8d
    CompareDial Exclusive
    Three SIM
    Three SIM
    Unlimited data
    • Unlimited minutes
    • Unlimited texts
    Three
    Contract months:
    24
    Total ownership:
    £432.00
    Upfront:
    FREE
    Monthly:
    £18.00
    See deal
    Sold by Three
    See deal
    Sold by Three
    Three SIM
    Three SIM
    Three
    Unlimited data Unlimited mins + texts
    Contract months:
    24
    Total ownership:
    £432.00
    Upfront:
    FREE
    Monthly:
    £18.00
    Save
    See deal
    Sold by Three
You've viewed 15 of 19 deals
Deals last updated: 6 hours 47 minutes ago

Three SIM Only Deals

Three SIM Only Deals

If you're looking for the fastest 5G speeds, a Three SIM is the right choice for you. Independent tests have repeatedly shown Three delivers the fastest download and upload speeds when connected over 5G. What's more, 5G is available with all Three SIMs at no additional cost.

Three offer a range of SIMs for added flexibility, including unlimited data SIM deals. Contract lengths include 1 month, 12 months and 24 months. All Three SIMs include unlimited minutes and texts by default.

Can I get unlimited data with a Three SIM?

Yes, unlimited data deals are available on 1 month, 12 month and 24 month contracts.

There's no fair usage policy when using data within the UK, however when roaming you cannot use more than 12GB per month.

Can I use my Three SIM abroad?

You can roam in most countries with a Three SIM.

From 23rd May 2022, roaming in Europe will no longer be free. Instead, you will have to pay £2 per day, which will automatically be charged when you visit a European country. Customers who signed up for a contract before October 2021 will still be eligible for free European roaming, as long as they have not upgraded since.

For select countries outside Europe, you can get Go Roam for £5 per day, which allows you to use your allowance in 73 worldwide destinations.

For all other countries, you will be charged at a separate out of plan rate.

For a full list of destinations and more details, see Three roaming.

Can I get 5G with a Three SIM?

Yes, 5G is available for all Three customers at no additional cost. If you’re using a Three SIM, you’ll need a 5G phone in order to receive a 5G signal.

Three originally launched their 5G network in August 2021, and claim to have 50 Mhz more spectrum compared to other UK networks, for a total of 140 Mhz. They also claim to be the fastest 5G network, with independent tests carried out by Ookla.

Three is investing over £2bn into their 5G infrastructure, by adding new 5G phone masts and converting existing equipment to support the 5G spectrum.

Currently, Three has 5G in over 300 locations, which can reach 29% outdoor coverage. They plan to reach over 2,500 locations within the following years.

Here are the 300 locations you can get 5G with Three:

  1. Aberdeen
  2. Abingdon-On-Thames
  3. Accrington
  4. Adlington
  5. Aldershot
  6. Aldridge
  7. Altofts
  8. Anstey
  9. Armthorpe
  10. Ashford
  11. Ashington
  12. Aspull
  13. Aughton
  14. Balloch
  15. Banbury
  16. Barnsley
  17. Barrhead
  18. Barrow-In-Furness
  19. Basildon
  20. Basingstoke
  21. Bath
  22. Bedford
  23. Belfast City
  24. Bellshill
  25. Bicester
  26. Billericay
  27. Billingham
  28. Birdwell
  29. Birkenhead
  30. Birmingham
  31. Bishops Stortford
  32. Bishopthorpe
  33. Blackburn
  34. Blackpool
  35. Blyth
  36. Borehamwood
  37. Bournemouth
  38. Bracknell
  39. Bradford
  40. Braintree
  41. Bransholme
  42. Brentwood
  43. Brighouse
  44. Brighton
  45. Brimington
  46. Bristol
  47. Broadbridge Heath
  48. Bromsgrove
  49. Brookmans Park
  50. Broughton Astley
  51. Buckhaven
  52. Buckingham
  53. Burnley
  54. Burton Upon Trent
  55. Bushey
  56. Cannock
  57. Cardiff / Caerdydd
  58. Carlisle
  59. Castle Donington
  60. Chatham
  61. Chelmsford
  62. Cheltenham
  63. Chesham
  64. Chester
  65. Chesterfield
  66. Chorley
  67. Christchurch
  68. Christleton
  69. Clayton-Le-Woods
  70. Clifton
  71. Colchester
  72. Collingham
  73. Copmanthorpe
  74. Corringham
  75. Coventry
  76. Crawley
  77. Crewe
  78. Crook
  79. Crumlin
  80. Cullingworth
  81. Danderhall
  82. Denholme
  83. Derby
  84. Dewsbury
  85. Dinnington
  86. Doncaster
  87. Dordon
  88. Dundee
  89. Durham
  90. Earls Barton
  91. East Kilbride
  92. Eastleigh
  93. Eaton Socon
  94. Edinburgh
  95. Ellesmere Port
  96. Erskine
  97. Exmouth
  98. Falkirk
  99. Faversham
  100. Felixstowe
  101. Formby
  102. Frodsham
  103. Gateshead
  104. Gerrards Cross
  105. Glasgow
  106. Gloucester
  107. Golborne
  108. Gorebridge
  109. Grays
  110. Great Harwood
  111. Greenock
  112. Grimsby
  113. Guildford
  114. Halifax
  115. Hamilton
  116. Harpenden
  117. Harrogate
  118. Hartley
  119. Hatfield
  120. Heanor
  121. Heathcote
  122. Hedge End
  123. Hemel Hempstead
  124. Hemsby
  125. Hertford
  126. Heswall
  127. Heywood
  128. Hilton
  129. Horley
  130. Horwich
  131. Hoyland
  132. Huddersfield
  133. Huntington
  134. Inchinnan
  135. Ingleby Barwick
  136. Ipswich
  137. Irlam
  138. Iver Heath
  139. Keighley
  140. Kimberley
  141. Kings Langley
  142. Kingston Upon Hull
  143. King’S Hill
  144. King’S Stanley
  145. Kinmel Bay / Bae Cinmel
  146. Kirkcaldy
  147. Kirkham
  148. Kirkheaton
  149. Kirkliston
  150. Kirknewton
  151. Leeds
  152. Leicester
  153. Leigh
  154. Leyland
  155. Lincoln
  156. Littlestone-On-Sea
  157. Liverpool
  158. Livingston
  159. Loanhead
  160. Locks Heath
  161. Loftus
  162. London
  163. London Colney
  164. Loughborough
  165. Lower Stondon
  166. Lowestoft
  167. Luton
  168. Lutterworth
  169. Maidenhead
  170. Maidstone
  171. Manchester
  172. Mansfield
  173. Margate
  174. Marlow Bottom
  175. Marston Moretaine
  176. Maylandsea
  177. Merthyr Tydfil / Merthyr Tudful
  178. Metropolitan Castlereagh
  179. Metropolitan Newtownabbey
  180. Middlesbrough
  181. Milnrow
  182. Milton Keynes
  183. Mirfield
  184. Moorends
  185. Mossley
  186. Motherwell
  187. Nelson
  188. Neston
  189. New Rossington
  190. Newark-On-Trent
  191. Newbridge
  192. Newcastle Upon Tyne
  193. Newhall
  194. Newport / Casnewydd
  195. Newport: Gwent
  196. Newquay
  197. Newton Abbot
  198. Newton Aycliffe
  199. Newton-Le-Willows
  200. Newtown / Y Drenewydd
  201. Normanton
  202. Northampton
  203. Norwich
  204. Nottingham
  205. Nuneaton
  206. Offerton Green
  207. Oldham
  208. Ottershaw
  209. Oxford
  210. Perth
  211. Peterborough
  212. Plymouth
  213. Pontefract
  214. Porthcawl
  215. Portsmouth
  216. Poulton-Le-Fylde
  217. Preston
  218. Queensferry
  219. Ramsbottom
  220. Rawtenstall
  221. Reading
  222. Redcar
  223. Redditch
  224. Redhill
  225. Reigate
  226. Rhondda
  227. Rochester
  228. Rothwell
  229. Rottingdean
  230. Royston
  231. Rugeley
  232. Rushden
  233. Sawston
  234. Scunthorpe
  235. Seaton Carew
  236. Sheffield
  237. Shefford
  238. Shelly Green
  239. Shildon
  240. Shrewsbury
  241. Sittingbourne
  242. Skelton
  243. Slough
  244. South Heighton
  245. South Kirkby
  246. South Normanton
  247. South Ockendon
  248. South Woodham Ferrers
  249. Southampton
  250. Southend-On-Sea
  251. Southport
  252. Spennymoor
  253. St Albans
  254. St Blazey
  255. St Columb Road
  256. Stafford
  257. Stainforth
  258. Stapenhill
  259. Stevenage
  260. Stocksbridge
  261. Stockton-On-Tees
  262. Stoke-On-Trent
  263. Stratford-Upon-Avon
  264. Sunderland
  265. Sunninghill
  266. Sutton Coldfield
  267. Sutton In Ashfield
  268. Swadlincote
  269. Swansea / Abertawe
  270. Swindon
  271. Swinton
  272. Tamworth
  273. Taunton
  274. Telford
  275. Thatcham
  276. The Mumbles
  277. Thornaby-On-Tees
  278. Tonbridge
  279. Totton
  280. Wakefield
  281. Wallingford
  282. Walton
  283. Wanstead
  284. Warrington
  285. Washington
  286. Weeping Cross
  287. Wells
  288. Westhoughton
  289. Weybridge
  290. Whitburn
  291. Wickford
  292. Wigan
  293. Windsor
  294. Winterbourne
  295. Wolverhampton
  296. Worcester
  297. Worksop
  298. Writtle
  299. Yeovil
  300. York

Can I get a Three SIM if I have a bad credit rating?

It depends on the contract length and how low credit rating is. Most people with a bad credit rating are likely to get a 1 month rolling SIM contract with Three, however you may find difficulty in being accepted for a 12 month or 24 month contract.

Three 1 month SIMs

If you don’t want to be tied to a long contract, Three offer 1 month rolling SIM contracts.

All Three 1 month SIMs come with unlimited minutes and texts, with data ranging from 4GB to unlimited.

You can cancel a Three 1 month SIM at any time you want. You can also change your plan to a lower or higher cost tariff whenever you like.

Do I need to unlock my phone to use a Three SIM?

If you bought your phone from Three, or it originally came with a Three SIM, then you shouldn’t need to unlock your phone in order to use a Three SIM.

Since December 2021, it is illegal for any network to sell a mobile phone that is locked to a specific network.

If you bought your phone before this date, it may be locked to your current network. If you’re unsure if your phone is unlocked, simply insert a SIM from a different network - if your phone is locked, an error message will be shown.

All providers must unlock your phone for free. You will need to contact your current network to do this. They will ask for your IMEI number, which you can obtain by dialing *#06# from your phone.

What size SIM cards can I get with Three?

Three offers all SIM cards sizes, and are currently trialing eSIMs. You will be sent a standard SIM card size, which will have cutouts to be broken down to a micro SIM or nano SIM. eSIMs with Three are not widely available, and are in a trial phase with select customers.

  1. Standard - the largest SIM card size, which is generally used with older non-smartphones. Newer phones are likely to use micro or nano SIMs.

  2. Micro - Once considered a smaller replacement for standard SIMs, micro SIMs are less prevalent today, being replaced by the even smaller nano SIM. Older smartphones or budget phones may still use a micro SIM.

  3. Nano - The smallest and most common SIM card size used in phones sold today. Used by the newer iPhones and Samsungs.

  4. eSIM - A digital SIM card. eSIMs are still a new technology, and are not commonly used in the UK right now. Three are currently trialing eSIM technology for compatible phones such as the Apple iPhone 15. Three have not announced when eSIMs will be generally available.

Can I switch from my current network to a Three SIM?

Yes, it’s easy to switch to Three. From your current network, text PAC to 65075 for free. You will receive a reply text within 5 minutes, which will contain your PAC code.

You will need to give this PAC code to Three. You can do this at the time of purchase, or by contacting Three after you have received your Three SIM card.

After you have given your PAC code to Three, they will begin the switch or your behalf, which normally takes 3 working days. Once the switch has completed, you will lose signal with your current network. When this happens, you can insert your Three SIM to complete the switching process.

For more information, see transferring your phone number to a new network.

Does Three have good coverage?

Three has very good coverage. As the 4th largest network in the UK, they are able to deliver 4G to 99.9% of the population. With 140MHz 5G spectrum, Three claim they are the fastest 5G network, with tests independently carried out by Ookla.

As the name might suggest, Three originally started as the UK’s first 3G network - a claim which they still hold to this day. However, as 3G becomes more obsolete, Three have been upgrading their existing infacturutre and phone masts to support 4G and 5G connectivity.

You can check the signal strength you will receive from your location by entering your postcode into the Three coverage checker tool. You will also be able to see a breakdown of each spectrum, with information about 3G, 4G and 5G.

Is Three a fast network?

In a recent independent test by Opensignal, Three is the second fastest network in the UK, only beaten by EE.

Average download speeds were 25.2 Mbps, with upload speeds of 6.3 Mbps. As for 5G, they also came in second place, with average download speeds of 80.2 Mbps and upload speeds of 9.8 Mbps.

According to Ookla, their late 2021 Speedtest Intelligence tests showed Three to be the fastest 5G network, with median download speeds of 258.80 Mbps and median upload speeds of 13.94 Mbps. The majority of tests were carried out in London, Birmingham and Manchester.

How reliable is Three?

Despite being the smallest major UK network, Three deliver a very reliable service, with minimal downtime when compared to the other major networks.

In mid February 2022, Three suffered from a network outage across the UK, with particular disruption in London. Customers were unable to make calls and texts, with some left without internet. However, normal service was resumed by the end of the day.

Apart from the unavoidable minor disruptions, Three has not had any major downtime in recent years.

Does Three have good customer service?

Three has fairly good customer service, with help available over the phone, online via webchat and from their physical stores.

90% of Three’s call centres are located within India (Mumbai and Pune), with the remaining in Scotland (Glasgow).

Three’s call centres are open 7 days a week, from 8am to 8pm on weekdays and 9am to 8pm on weekends. Calling Three is free, however calling from abroad may incur charges.

  • From a Three phone: 333
  • From any other phone: 0333 338 1001
  • From abroad: +44 7782 333 333

You can also use their live chat service, which is open 8am to 10pm on weekdays and 9am to 8pm on weekends.

Help is also available through the Three app on Android and iOS, where you can view your account status and billing information.

You can find your nearest store by entering your postcode into the Three storage locator.

In Ofcom’s recent pay monthly mobile complaints data for July 2021 to September 2021, Three received an average of 3 complaints per 100,000 customers. This is slightly higher than the average of 2 complaints.

Three+ rewards

In December 2021, Three launched their rewards app called Three+.

Three+ is a loyalty scheme available for all Three customers, with offers from several brands, including Cineworld and Uber Eats.

As well as access to presale tickets for major concerts and events, you can also get discounts and freebies from the following companies:

  • Uber Eats - 20% off your order
  • CineWorld - £3 ticket on weekends
  • Frankie & Benny’s - 2 mains for £10
  • Bloom & Wild
  • Chelsea FC
  • Chiquito
  • Days Out+
  • Picture House
  • Love Theatre
  • Readly
  • Simply Cook
  • The Telegraph

The Three+ app is available for Android and iOS devices.

Three Add-ons

If you’re running low on data, minutes or texts, you can purchase a separate add-on to get more allowances.

You can purchase a Three add-on through My3 or by the Three app.

Add-on Description Pirce Renews automatically
One Day Boost Unlimited data until UK midnight £5 / day No
Monthly Boost Unlimited Data Unlimited data each month £15 / month No
Monthly Boost 1GB 1GB extra data each month £5 / month Yes
Monthly Boost 3GB 3GB extra data each month £7 / month Yes
Monthly Boost 6GB 6GB extra data each month £8 / month Yes
Short-Term Boost Unlimited Data Unlimited data until your next bill £20 / month No
Call Abroad 100 100 international minutes each month £5 / month Yes
Call Abroad Unlimited Unlimited international calls £10 / month Yes

FAQs

Can I get 5G with a Three SIM?

Yes, 5G is available for all Three SIM cards. However, you must have a 5G phone in order to receive a 5G signal.

Can I roam for free in the EU with a Three SIM?

No, from 23rd May 2022, roaming in Europe will no longer be free. Instead, you will have to pay £2 per day, which will automatically be charged when you visit a European country. Customers who signed up for a contract before October 2021 will still be eligible for free European roaming, as long as they have not upgraded since.

For a full list of destinations and more details, see Three roaming.

Where can I find the best Three SIM Only deals?

You can use our comparison tools to find the best Three SIM Only deals.

How fast is Three?

According to Ookla, Three is currently the fastest 5G network, with median download speeds of 258.80 Mbps and median upload speeds of 13.94 Mbps.

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