Which? customer score
Ofcom complaints
Too small to be listed by Ofcom
Network it uses
Three (also Vodafone sites via VodafoneThree network sharing, rolling out since 2025)
Owned by
Hutchison 3G UK Ltd (Three), part of VodafoneThree, which has been wholly owned by Vodafone Group plc since July 2026
Customer service
Online only: web chat with agents 8am to 8pm daily, 24/7 chatbot, help centre and community forum. No phone support.
EU roaming
Up to 12GB of UK data in the EU included; EU data pass (£3 a day) if you need more
Contracts
30-day rolling only, no long contracts
Credit check
No credit check (plans paid up front)
Price rises
No annual price rise
Features
5G: Yes · eSIM: Yes · Wi-Fi calling: Yes · Data rollover: No
Perks
Every SMARTY plan we track
Sorted by what you pay over 12 months.
| Network | Data | Contract | Monthly | 12 months | |
|---|---|---|---|---|---|
| SMARTYRuns on Three · EU roaming up to 5GB | 5GB | Monthly | £6 | £72.00 | Go to SMARTY Provider link |
| SMARTYRuns on Three · EU roaming up to 12GB | 18GB | Monthly | £6 | £72.00 | Go to SMARTY Provider link |
| SMARTYRuns on Three · EU roaming up to 12GB | 40GB | Monthly | £7 | £84.00 | Go to SMARTY Provider link |
| SMARTYRuns on Three · EU roaming up to 12GB | 75GB | Monthly | £8 | £96.00 | Go to SMARTY Provider link |
| SMARTYRuns on Three · EU roaming up to 12GB | 95GB | Monthly | £9 | £108.00 | Go to SMARTY Provider link |
| SMARTYRuns on Three · EU roaming up to 12GB | 100GB | Monthly | £10 | £120.00 | Go to SMARTY Provider link |
| SMARTYRuns on Three · EU roaming up to 12GB | 170GB | Monthly | £12 | £144.00 | Go to SMARTY Provider link |
| SMARTYRuns on Three · EU roaming up to 12GB | Unlimited | Monthly | £17 | £204.00 | Go to SMARTY Provider link |
Good
- No credit check and no contract
- No annual price rises
- 12GB EU roaming included
Not so good
- No phone support
- No data rollover (money back only on a few small plans)
- Payment by card or PayPoint only, not direct debit
Uswitch 2025: Best Mobile Network for Data
Other networks on Three
Same masts, so the same coverage. Worth comparing prices.
Sources: uswitch.com, en.wikipedia.org, help.smarty.co.uk, simsherpa.com.