Smarty is a SIM-only mobile network running on Three’s UK network, with 99% 4G/5G coverage and no annual contracts. Plans roll monthly, from light 5GB bundles right up to unlimited data, making Smarty a great fit for switchers who want flexibility, students on a budget, and anyone fed up with overpaying on a traditional contract. EU roaming is included as standard, with no credit check to join.
SMARTY is doubling the data on its £8 SIM-only plan – sign up and you get 32GB instead of 16GB, for the same £8 a month. There’s no code to enter: the extra data is applied automatically when you join through this page. It’s a simple way to get more from a rolling, no-credit-check SIM.
Sign up to the £8 a month plan and get 32GB of data instead of the standard 16GB – effectively doubling your allowance without doubling the price.
Anyone signing up as a new SMARTY customer on the 16GB SIM-only plan qualifies – there’s no credit check and no membership or verification needed to get the extra data.
Beyond this double data deal, SMARTY shoppers can also use our Smarty 10% Off Group SIM Plans discount code, refer a friend for up to £20 each, or check the Social Tariff if they’re on qualifying benefits.
No. This offer applies automatically when you sign up to the 16GB plan through our link – there’s no code to enter at checkout.
You pay the same £8 a month as the standard 16GB plan; the extra data is added at no extra cost.
No. SMARTY doesn’t credit-check new customers, so you can sign up even with a limited or poor credit history.
There’s currently no set end date, so it’s worth grabbing while it’s live on this page.
Yes – SMARTY lets you bring your existing number across when you sign up, the same as any other UK SIM switch.
SMARTY doesn’t run a separate NHS discount for this double data deal – the £8, 32GB offer is open to everyone, NHS staff included. If you’re after a dedicated NHS or Blue Light Card saving, check our full Smarty discount codes page for the latest options.
No student verification is needed for this particular deal – the double data applies automatically regardless of student status. Students after a dedicated discount can still verify with Student Beans separately; see our full Smarty discount codes page for that offer.
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