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

three logo with a SIM cardVisit three.co.uk

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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: 16th July 2021.

Three's best SIM only deals

Our favourite SIM only deal of the month on Three

Three SIM card
 
12GB data
£8
a month

12-month dealGet this deal

at three.co.uk
(opens in new window)

We think the best value for money SIM only plan on Three for July is their 12GB for £8 deal. It's on a 12‑month plan and comes with unlimited minutes and texts too:

It's a good deal by Three's standards but price-wise you can still beat this plan on other providers (even ones that still use the Three network). Here are the networks offering it cheaper:

They're also offering 8GB for £7 on SIM only currently

Three SIM card
 
8GB data
£7
a month

12-month dealGet this deal

at three.co.uk
(opens in new window)

If you don't want so much data, the next best SIM only plan on Three in our opinion is their 12‑month one below. For £7 a month, you get 8GB data, plus unlimited minutes and texts:

If you're open to joining other networks than Three, you can actually get a similar deal for less, even with providers whose SIMs also use the Three network. See the networks that beat it here:

£6 for 4GB is Three's next best SIM deal in July

Three SIM card
 
4GB data
£6
a month

12-month dealGet this deal

at three.co.uk
(opens in new window)

There's also a nice 100GB for £15 plan with them this month

Three SIM card
 
100GB data
£15
a month

12-month dealGet this deal

at three.co.uk
(opens in new window)

For even more data, our next best pick of Three SIM only plans is their 12‑month £15 deal below, which gets you 100GB data and unlimited minutes and texts:

It's not actually the cheapest SIM only deal on the market at the moment with 100GB data or more but it is the lowest-priced plan on any provider using the Three network. See which networks that are cheaper here:

Or their £12 for 30GB SIM plan is worth a look too

Three SIM card
 
30GB data
£12
a month

12-month dealGet this deal

at three.co.uk
(opens in new window)

For those with smaller data needs, Three are also offering this £12 SIM, which includes 30GB data, unlimited minutes and texts on a 12‑month plan. It's another of their best deals:

Even though it's in our pick of Three's best SIM only deals, you can actually beat it on price with other providers, including ones that also use the Three network. Here's where else you can get a lower price:

Three are also offering 30GB for £10 on SIM only

Three SIM card
 
30GB data
£10
a month

12-month dealGet this deal

at three.co.uk
(opens in new window)

If that's more data than you need, you might like the £10 SIM only deal running on Three at the moment. It's a 12‑month plan, which comes with 30GB data, unlimited minutes and texts too:

While this is a good enough deal to make it into the best of Three's SIMs, you can beat it for price (even if you definitely want a provider that uses the Three network). See who's offering it for less here:

They've also got a unlimited data for £16 SIM plan at the moment

Three SIM card
 
Unlimited data
£16
a month

12-month dealGet this deal

at three.co.uk
(opens in new window)

If you think you'll need even more data, we'd say this is one of Three's best deals on SIM only this month too. It's a 12‑month plan, comes with unlimited data, unlimited minutes and texts for £16 a month:

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:

Compare all SIM only plans

Compare deals from all networks

How Three's deals compare with other networks

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