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Three SIM only deals for June: how they compare on price

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We've taken each of Three's best SIM only plans this month and compared them on price with other UK networks. Here's what we found. SIM Sherpa is your trusty guide. Last updated: 15th June 2021.

Three's best SIM only deals

This month's overall best Three SIM only deal

Three SIM card
12GB data
a month

12-month dealGet this deal

(opens in new window)

Out of all Three's SIM only plans they've got running this June, our current best pick would be their £8 one below. It's on a 12‑month deal, gets you 12GB data, plus unlimited minutes and texts as well:

It's definitely one of Three's best. But it's not market-leading. You can get a similar plan on other providers for less, even if you need your SIM to use the Three network. See which networks that are cheaper here:

Three's 4GB for £6 plan is a good option too

Three SIM card
4GB data
a month

12-month dealGet this deal

(opens in new window)

Their £15 for 100GB plan is a decent deal for June

Three SIM card
100GB data
a month

12-month dealGet this deal

(opens in new window)

To satisfy even bigger data needs, another option for you on Three, is their 12‑month SIM below, which costs £15 a month for 100GB data and comes with unlimited minutes and texts:

It's currently the best priced 100GB data or more SIM only deal on a provider using the Three network, even if you can beat it on price if you're open to ones not on Three. See who's offering it for less here:

They're also offering 30GB for £12 on SIM only currently

Three SIM card
30GB data
a month

12-month dealGet this deal

(opens in new window)

For less data to use each month, Three have got a £12 deal on SIM only we think's worth looking at. It gets you 30GB data, unlimited minutes and texts and it's a 12‑month plan:

It's a good enough deal to get into Three's best SIMs but you can actually get a lower price for a similar plan elsewhere, even if you definitely want it to use the Three network. Here's where you can beat it on other networks:

£16 for unlimited data is Three's next best SIM deal in June

Three SIM card
Unlimited data
a month

12-month dealGet this deal

(opens in new window)

For those needing even more data, we think this unlimited data is one of the best SIM only plans on Three too. It's on a 12‑month deal, comes with unlimited minutes and texts - all for £16 a month:

In comparison to the rest of Three's current SIM only plans, it's one of the best. But it is beatable on price, even if you're set on joining a provider that uses the Three network. See lower-priced networks' deals here:

Compare all SIM only plans

Compare deals from all networks

How Three's deals compare with other networks

SIM card with magnifying glass



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