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Unlimited data for just £18/pm - Three's SIM only deals domination continues

SIM only deals
(Image credit: Future)

Like a Karate Kid or Rocky Balboa montage moment, Three trained, worked hard and came out of nowhere to absolute destroy the SIM only deal market throughout November, Black Friday and Cyber Monday.

And in typical movie magic style, Three is sticking it out to the happy ending, continuing to sell its unbeatable unlimited data plan for just £18 a month way after Black Friday has closed its doors.

And believe us when we say competitors tried to take it on. Smarty Mobile dropped a bargain big data plan, EE pulled out one of the best deals its had for a while and iD Mobile went as cheap as you can without bankrupting a company - Three just couldn't lose.

Want to find out more about this SIMO winner? We've listed everything you'll need to know below. Or, consult our guide to the best SIM only deals to see how everything else compares.

Three's mega SIM only deal with unlimited data:

SIM only from Three | 12 months | Unlimited data | Unlimited calls and texts | £18 a month
What can we say...Three's done it again. Knocking its prices even further down, it took the position of best SIM only deal for the second Black Friday and Cyber Monday in a row and is now continuing its dominance into December. Whether or not something will come along and beat this is yet to be determined but what we do know is, this is the best SIM only deal available right now.
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Or an alternate unlimited data SIM only deal:

Three SIM only| 24 months | Unlimited data, calls, and texts | £10 a month for the first six, then £20 a month
Getting unlimited data for just £10 is a rare sight and one that only Three has managed to achieve so far. Of course, those bills only last for six months and then you'll have to pay £20 a month for the last 18, which is still one of the best prices around. The only issue is that it lasts for 24 months. Too long? Try the offer above.
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Why should you choose Three Mobile?

If you haven't already been won over by this amazing offer from Three then you'll be excited to hear that the network doesn't shy away from offering up some extra incentives as well.

Whether that be free exclusive prizes or extra roaming. You can see all of best parts of a Three SIM only deal or Three mobile deals down below.

  • Wuntu - Exclusive offers and freebies with Three's rewards app
  • Go Roam - Roaming abilities in 71 worldwide countries at no extra cost
  • Travel Swagger - Get travel upgrades with Easyjet with bag drop and early boarding