SMARTY SIM-only deals

18 plans, sorted by average monthly cost. Checked against SMARTY’s website on 8 August 2026.

SMARTY runs on Three’s network — same coverage, usually for less. Its plans include 5G, eSIM and Wi-Fi calling.

SMARTY

SMARTY runs on Three’s network — same coverage, usually for less. Its plans include 5G, eSIM and Wi-Fi calling.

Show 11 more SMARTY deals — each beaten on price or data by one above

Cheapest SMARTY plan is £6.00/mo. SMARTY runs on Three's network — compare it against every other provider using the same masts.

What you get with SMARTY

The extras and perks included with a SMARTY plan, beyond the data and minutes.

SMARTY Perks

Member offers and discounts available through your SMARTY account.

Details on SMARTY's site →

Group plans

Add family or friends to one bill and everyone pays less per SIM.

Details on SMARTY's site →

Referral reward

Earn up to £20 in account credit for referring people to SMARTY.

Details on SMARTY's site →

SMARTY FAQ

How much is SMARTY?

The cheapest SMARTY SIM-only plan is £6.00/mo (5GB, monthly rolling). SMARTY sells 18 plans in total, and we check every price against SMARTY's own site.

What network does SMARTY use?

SMARTY is an MVNO: it runs on Three's masts, so you get the same signal and coverage as Three, usually at a lower price.

Can I use SMARTY abroad in the EU?

SMARTY includes EU roaming. EU roaming is included at no extra cost, with unlimited calls and texts working as at home.

Does SMARTY have 5G?

Yes — SMARTY includes 5G.

Does SMARTY support eSIM?

Yes — SMARTY supports eSIM. New customers can join instantly with an eSIM as an alternative to a posted SIM.

Does SMARTY put prices up mid-contract?

SMARTY does not raise prices mid-contract. 30-day rolling plans only — no long-term lock-in, so no mid-contract rises.

Also using the Three network

You can get the same underlying coverage from iD Mobile, simp mobile, Superdrug Mobile, Honest Mobile and Three, although prices, speeds, roaming and customer support differ. See every network on Three →

Compare all UK networks side by side →

Feature and price data is checked by Scrimpr against SMARTY's own site and public documentation. Networks change plans often — always confirm details on the provider's site before buying. Some links are affiliate links (marked *), which support Scrimpr at no cost to you.