SMARTY SIM-only deals
SMARTY SIM-only deals
8 SMARTY plans, cheapest first. Prices checked against SMARTY's own site — these are the ongoing monthly costs, not introductory rates.
| Data | Contract | Monthly price | |
|---|---|---|---|
| 5GB | 30-day rolling | £6.00 | Get deal* |
| 1GB | 30-day rolling | £6.00 | Get deal* |
| 8GB | 30-day rolling | £7.00 | Get deal* |
| 2GB | 30-day rolling | £7.00 | Get deal* |
| 35GB | 30-day rolling | £7.00 | Get deal* |
| 16GB | 30-day rolling | £8.00 | Get deal* |
| 3GB | 30-day rolling | £8.00 | Get deal* |
| 75GB | 30-day rolling | £8.00 | Get deal* |
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 →The essentials
| Price rises | None 30-day rolling plans only — no long-term lock-in, so no mid-contract rises. |
|---|---|
| Data rollover | No No data rollover — unused data is lost at the end of the month. |
| Full-speed data | Full speed Full access, no speed caps |
| 5G | ✓ |
| eSIM | ✓ New customers can join instantly with an eSIM as an alternative to a posted SIM. |
| Tube coverage | ✓ You get Tube coverage through Three’s network. TfL station WiFi has been superseded by 4G/5G mobile coverage in tunnels and stations, rolled out by all four networks and growing across the lines — just use your phone and it connects automatically. |
| Inclusive international calls | No International calls are charged per minute or via a paid add-on — not included in the plan. |
| Unlimited data | Unlimited Genuinely unlimited data — no monthly fair-use cap (speed may be deprioritised at busy times; see Full-speed data). |
| EU roaming | Included EU roaming is included at no extra cost, with unlimited calls and texts working as at home. |
| Roaming data | 12GB On plans over 12GB, a 12GB fair-use roaming limit applies each plan month. |
Technical details
| Roaming countries | EU (44) Roam in 44 European destinations at no extra cost: calls and texts work as at home, plus up to 12GB of your monthly data allowance (fair use limit). |
|---|---|
| Tethering / hotspot | ✓ Tethering is allowed - you can share your data connection with a laptop, tablet or other device. |
| 5G Standalone | ✗ Not available — Three's network doesn't support standalone 5G yet |
| WiFi calling | ✓ |
| Roaming beyond the EU | Charged per use; rates dep… |
| 4G calling (VoLTE) | ✓ |
| RCS messaging | ✗ |
| RCS encryption | ✗ |
| Conference calling | ✓ |
| Missed call alerts | Some Only available when roaming off the host network |
| Visual voicemail | ✗ |
| HD Voice | ✓ |
| Carrier IMS | ✓ |
| Carrier voicemail | ✓ |
| Inclusive MMS | ✓ |
| IPv6 | Some IPv4 only |
| Roaming agreements | ✓ DIRECT |
| 5G roaming | ✓ |
| 4G calling abroad | ✓ |
SMARTY FAQ
How much is SMARTY?
The cheapest SMARTY SIM-only plan is £6.00/mo (5GB, 30-day rolling). SMARTY sells 8 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?
Yes — SMARTY raises prices during your contract. 30-day rolling plans only — no long-term lock-in, so no mid-contract rises.
Other SIMs on the Three network
Same masts, same coverage — different prices and features.
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.
