Network vs network
SMARTY vs Three
Same masts, different deals. We compare price rises in pounds, roaming, credit checks and today’s cheapest SIMs on both.
bemobiles tips
Do they use the same masts?
Yes — coverage is effectively the same, so choose on price and extras.
Which one raises prices?
SMARTY: No annual rise. Three: +£1.80 to £2.30 every April by data.
Which is better abroad?
SMARTY: EU included, 12GB. Three: Go Roam £2.75 a day unless included.
SMARTY£144
Three£285.60Cheapest SIM with 10GB or more × 24, plus April rises
Live prices; rises estimated for a plan starting this month.
Over 24 months, the cheapest 10GB+ SIM costs £144 on SMARTY and £285.60 on Three once April rises are added — SMARTY is £141.60 cheaper. Both run on the same masts.
Prices checked 28 October 2026 · facts checked monthly · How we compare
SMARTY vs Three, side by side
| SMARTY | Three | |
|---|---|---|
| Masts | Three | Own masts |
| Annual price rise | No annual rise | +£1.80 to £2.30 every April by data |
| Roaming | EU included, 12GB | Go Roam £2.75 a day unless included |
| Credit check | None | Hard check |
| eSIM | Yes | Yes |
| Wi-Fi Calling | Yes | Yes |
| Cheapest SIM, 10GB+ | £6 a month | £7 a month |
| Cheapest SIM, 30GB+ | £7 a month | £8 a month |
| Cheapest SIM, Unlimited | £17 a month | £12.42 a month |
Highlighted = better on that line. Facts from network terms and Ofcom; prices live.
Our verdict
On price, SMARTY comes out ahead for a typical 10GB+ SIM: £141.60 less over two years once April rises are counted (SMARTY rises add about £0, Three’s about £45.60).
Because both use the same masts, coverage is identical — the choice comes down to price, price rises and extras.
Pick SMARTY if…
- You want the lower 24-month cost for a 10GB+ SIM
- You want a price that doesn’t rise every year
- You want to avoid a credit check
SMARTY and Three SIM only deals, live
FAQ
SMARTY vs Three questions
Is SMARTY or Three cheaper?
SMARTY, today: the cheapest 10GB+ SIM costs £6 a month, and over 24 months with April rises the gap is £141.60.
Do SMARTY and Three use the same network?
Yes, coverage is the same.
Which has better roaming?
SMARTY: EU included, 12GB. Three: Go Roam £2.75 a day unless included.
Can I switch from SMARTY to Three and keep my number?
Yes. Text PAC to 65075 from your SMARTY phone, give the code to Three, and the number moves within one working day.