Our favourite SMARTY SIM only deals for January 2025
The retailers featured on this page may compensate us when our readers follow links to their websites and make a purchase. More
We've looked at SIM only on all UK networks to help you find out which of SMARTY's plans work out best, for every data requirement. Last updated: 15th January 2025.
SMARTY's best SIM only deals
The best overall SIM only deal this month on SMARTY
just
£16
a month
✔ Unlimited mins and unlimited data See full deal
at smarty.co.uk
(opens in new window)
Looking at all SMARTY's options on SIM only this January, the deal that jumps out to us is their discounted unlimited data for £20 £16 one below. It's a 1‑month plan and comes with unlimited minutes and texts too:
Unlimited minutes + Unlimited texts + Unlimited data (5G) = £20 £16 a month (1‑month plan, no contract)
See full deal
🛈 No annual price rises
Getting £4 off a month means you’ll save £48 in total, if you spend a whole year on the 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). Here's which other networks can beat it:
Unlimited minutes + Unlimited texts + Unlimited data (5G) = £16 £8 a month for 6 months, then £16 (24‑month contract)
See full deal
Unlimited minutes + Unlimited texts + Unlimited data (5G) = £18 £0 a month for 3 months, then £18 (24‑month contract)
See full deal
We also like their £10 for 80GB plan
just
£10
a month
✔ Unlimited mins and 80GB data See full deal
at smarty.co.uk
(opens in new window)
For those with smaller data needs, we'd say this is one of SMARTY's best deals on SIM only this month too. It's a 1‑month plan, comes with 80GB data, unlimited minutes and texts for £10 a month:
Unlimited minutes + Unlimited texts + 40GB 80GB data (5G) = £10 a month (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. See where you can get it for less here:
Unlimited minutes + Unlimited texts + 80GB data (5G) = £10 £5 a month for 6 months, then £10 (24‑month contract)
See full deal
Unlimited minutes + Unlimited texts + 100GB data (5G) = £9.95 £4.98 a month for 3 months, then £9.95 (12‑month contract)
See full deal
Unlimited minutes + Unlimited texts + 120GB data (5G) = £10 a month (12‑month contract)
See full deal
Their 50GB for £8 SIM is another good option
just
£8
a month
✔ Unlimited mins and 50GB data See full deal
at smarty.co.uk
(opens in new window)
If that's more data than you need, have a look at SMARTY's 50GB SIM below at £8 a month, as it's another good deal. It's on a 1‑month plan and comes with 50GB data, unlimited minutes and texts:
Unlimited minutes + Unlimited texts + 16GB 50GB data (5G) = £8 a month (1‑month plan, no contract)
See full deal
In comparison to the rest of SMARTY'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. Here are the networks offering it cheaper:
SMARTY's 5GB for £5 plan is a good option too
just
£5
a month
✔ Unlimited mins and 5GB data See full deal
at smarty.co.uk
(opens in new window)
For less data to use each month, another option for you on SMARTY is their discounted 1‑month SIM below, which costs £6 £5 a month for 5GB data and comes with unlimited minutes and texts:
Unlimited minutes + Unlimited texts + 5GB data (5G) = £6 £5 a month (1‑month plan, no contract)
See full deal
🛈 No annual price rises
It’d be a total discount of £12 if you stayed on the deal for a whole year.
If you don't need your SIM to be on a provider that uses the Three network, you can beat this deal elsewhere. But if you do, it's the cheapest 5GB data or more option. See the networks that beat it here:
Unlimited minutes + Unlimited texts + 5GB data (5G) = £4.25 £0 a month for 3 months, then £4.25 (24‑month contract)
See full deal
1000 minutes + 1000 texts + 5GB data (5G) = £4.50 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