If you’ve been keenly following our coverage of Three’s unlimited data SIM deal (and we can only assume its a top priority for you!), then you’ll know we’ve been loudly and proudly calling it the ‘best SIM only deal ever’ since its release over Black Friday.

Almost half a year on and we’re deep into a game of cat and mouse. Three brings the deal back, extends it and then pulls it from us just when we were getting used to having it there. Now, once again extended now is the time to grab this offer before its cruelly pulled away again. 

Offering unlimited data for the grand price of just £20, Three has undercut the rest of the market by at least £5 a month, making it the go to choice for any hardcore streamers and Facebook scrollers out there. 

You can see this deal in full down below and compare it to the rest of the UK’s SIM only deals, allowing you to see just how much you’re saving.

Three’s best ever SIM only deal in full:

Why go for a Three SIM only deal?

If you haven’t already been won over by this amazing offer then you’ll be excited to hear that Three 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 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

Probably the only downside is that you have to commit to a whole year if you go for this offer. At £240 for an entire 12 months of all-you-can-eat data, texts and calls, we think it’s still well worthwhile. But if you’re a commitment-phobe who wants more flexibility to cancel, then check out Smarty’s £25 per month unlimited data SIM that only makes you commit to 30 days at a time instead.