SMARTY SIM only offers: 10GB for £5, 80GB for £8
The retailers featured on this page may compensate us when our readers follow links to their websites and make a purchase. More
We check SMARTY's SIM only pricing against other mobile networks to identify the best offers they've got running this month. Last updated: 9th June 2025.
SMARTY's best SIM only deals
Our favourite current SMARTY SIM only deal
just
£5
a month
✔ Unlimited mins and 10GB data See full deal
at smarty.co.uk
(opens in new window)
Out of all the SIM only plans available this June on SMARTY, we'd say their best value deal is their 1‑month SIM below, which gets you 10GB data, plus unlimited minutes and texts for £7 a month:
Unlimited minutes + Unlimited texts + 8GB 10GB data (5G) = £7 £5 a month for 15 months, then £7 (1‑month plan, no contract)
See full deal
This is actually the leading price in the UK at the moment for a SIM only deal with 10GB data or more. The plans under the dropdown are the next nearest you can get to SMARTY with other providers:
Unlimited minutes + Unlimited texts + 10GB data (5G) = £5.90 a month (1‑month plan, no contract)
See full deal
Unlimited minutes + Unlimited texts + 20GB data (5G) = £6 a month (1‑month contract)
See full deal
Unlimited minutes + Unlimited texts + 20GB data (5G) = £6 a month (1‑month contract)
See full deal
Unlimited minutes + Unlimited texts + 12GB data (5G) = £6 a month (24‑month contract)
See full deal
Unlimited minutes + Unlimited texts + 10GB data (5G) = £6 a month (12‑month contract)
See full deal
Unlimited minutes + Unlimited texts + 10GB data (5G) = £6 a month (24‑month contract)
See full deal
Unlimited minutes + Unlimited texts + 25GB 80GB data (5G) = £16 £8 a month (12‑month contract)
See full deal
Unlimited minutes + Unlimited texts + 50GB data (4G) = £8 a month (12‑month contract)
See full deal
🛈 Increased to: £9.00 on April 1 2026
1000 minutes + 1000 texts + 10GB data (5G) = £8 a month (1‑month plan, no contract)
See full deal
Unlimited minutes + Unlimited texts + 12GB data (5G) = £11 £9.50 a month (12‑month contract)
See full deal
🛈 No annual price rise for Clubcard holders
Unlimited minutes + Unlimited texts + 80GB data (5G) = £10 a month (1‑month plan, no contract)
See full deal
Unlimited minutes + Unlimited texts + 30GB data (5G) = £10 a month (1‑month plan, no contract)
See full deal
Unlimited minutes + Unlimited texts + 25GB data (5G) = £10 a month (18‑month contract)
See full deal
Unlimited minutes + Unlimited texts + 20GB data (5G) = £10 a month (1‑month plan, no contract)
See full deal
Unlimited minutes + Unlimited texts + 10GB data (5G) = £13 £10.40 a month (1‑month contract)
See full deal
Unlimited minutes + Unlimited texts + 10GB data (5G) = £14 £7 a month for 6 months, then £14 (12‑month contract)
See full deal
Unlimited minutes + Unlimited texts + 20GB data (5G) = £20 £15 a month (24‑month contract)
See full deal
Increased to: £18.60 on April 1 2027
Unlimited minutes + Unlimited texts + 10GB data (5G) = £8.25 a month for 1 month, then £17.50 (1‑month contract)
See full deal
🛈 Prices reduce over time!
Unlimited minutes + Unlimited texts + 50GB data (5G) = £18 a month (24‑month contract)
See full deal
🛈 Increased to: £19.50 on April 1 2026.
Increased to: £21.00 on April 1 2027
Their 80GB for £8 SIM is another good option
just
£8
a month
✔ Unlimited mins and 80GB data See full deal
at smarty.co.uk
(opens in new window)
To get a bigger chunk of data, our next best pick of SMARTY SIM only plans is their 1‑month £10 deal below, which gets you 80GB data and unlimited minutes and texts:
Unlimited minutes + Unlimited texts + 40GB 80GB data (5G) = £10 £8 a month for 15 months, then £10 (1‑month plan, no contract)
See full deal
Even though it's in our pick of SMARTY'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 you can beat it on other networks:
Unlimited minutes + Unlimited texts + 25GB 80GB data (5G) = £16 £8 a month (12‑month contract)
See full deal
SMARTY's 200GB for £12 plan is a good option too
just
£12
a month
✔ Unlimited mins and 200GB data See full deal
at smarty.co.uk
(opens in new window)
If you need even more data, SMARTY are also offering this £12 SIM, which includes 200GB data, unlimited minutes and texts on a 1‑month plan. It's another of their best deals:
Unlimited minutes + Unlimited texts + 100GB 200GB data (5G) = £12 a month (1‑month plan, no contract)
See full deal
While this is a good enough deal to make it into the best of SMARTY's SIMs, you can beat it for price (even if you definitely want a provider that uses the Three network). See lower-priced networks' deals here:
Unlimited minutes + Unlimited texts + 250GB data (5G) = £22 £12 a month (12‑month contract)
See full deal
Their £16 for unlimited data plan is a decent deal for June
just
£16
a month
✔ Unlimited mins and unlimited data See full deal
at smarty.co.uk
(opens in new window)
For even more monthly data, you might like the £20 SIM only deal running on SMARTY at the moment. It's a 1‑month plan, which comes with unlimited data, unlimited minutes and texts too:
Unlimited minutes + Unlimited texts + Unlimited data (5G) = £20 £16 a month for 15 months, then £20 (1‑month plan, no contract)
See full deal
It's a good enough deal to get into SMARTY'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 are other networks you can beat it on:
Unlimited minutes + Unlimited texts + Unlimited data (5G) = £18 £9 a month for 6 months, then £18 (24‑month contract)
See full deal
Unlimited minutes + Unlimited texts + Unlimited data (5G) = £16 a month (1‑month contract)
See full deal
Unlimited minutes + Unlimited texts + Unlimited data (5G) = £28 £16 a month (12‑month contract)
See full deal
Compare all SIM only plans
Compare deals from all networks
How SMARTY's deals compare with other networks
Networks
Providers:
Plan
Data: (0MB+)
Minutes: (0+)
Thanks, we'll send that out now. Please check your inbox for our email.More about SMARTY's SIM only plans
How SMARTY compare for benefits and SIM only prices
In our full review of SMARTY we like the fact that you get full access to Three’s brilliant 5G network while also getting good WiFi calling and 4G calling (see our Three vs SMARTY guide here).
They offer all their plans as 1-month no-contract deals. They have a wide range of data plans and typically share better value hidden deals with comparison websites like us which are worth keeping an eye out for.
SMARTY are usually one of the cheapest of all UK networks, and are probably the cheapest provider on Three’s network (alongside iD Mobile).
You don’t get many extra benefits on SMARTY. You do get 10% off any extra plans you add to your account. On top of that, SMARTY promise not to raise the cost of your plan while you’re with them.
Useful link: Read our full SMARTY review
What else you should know about SMARTY’s SIM only deals
You’ll receive your SMARTY SIM card within 2 working days of ordering. You’ll receive a package with every size of SIM for any phone. But you can’t get an eSIM on SMARTY (these networks do offer them).
After your SIM arrives you’ll have 14 days to return it if you’re not satisfied. You’ll only get a refund for what you haven’t used. Here are the full details on how to return your SMARTY SIM.
You don’t need to pass a credit check to join SMARTY as you pay for your plan up front. That makes them a great alternative if you failed a credit check for a Three SIM only contract but want to use their network.
If you want to switch over to SMARTY from another network and you want to keep your number you’ll have to request a PAC from your current provider and send it to SMARTY when you’re ready to switch (here’s how).
Useful link: Compare all SMARTY SIMs