on VodafoneVOXIvson ThreeSMARTY
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We compared every VOXI and SMARTY plan by what it costs per month across the whole contract, not the price in the advert.
VOXI runs on Vodafone's network and SMARTY on Three's, so coverage can differ street by street. Check your postcode on Ofcom's coverage checker before choosing on price.
The verdictWhich is cheaper?
Light use (5GB+)
SMARTY
VOXI: £10 20GB + unlimited social (7 apps) · rolling monthly
SMARTY: 5GB · rolling monthly
£48.00 a year less with SMARTY
Everyday (30GB+)
SMARTY
VOXI: £15 35GB + unlimited social, music, video · rolling monthly
SMARTY: 40GB · rolling monthly
£60.00 a year less with SMARTY
Heavy use (100GB+)
SMARTY
VOXI: £20 100GB + unlimited social, music, video · rolling monthly
SMARTY: 100GB · rolling monthly
£96.00 a year less with SMARTY
Unlimited data
SMARTY
VOXI: £35 Unlimited · rolling monthly
SMARTY: Unlimited · rolling monthly
£180.00 a year less with SMARTY
SMARTY is cheaper for 4 of 4 uses at the price everyone pays.
Side by sideAt a glance
| VOXI | SMARTY | |
|---|---|---|
| Network it runs on | Vodafone | Three |
| Contracts | rolling | rolling |
| Price rises | Price locked: no annual rises | Not stated on the plan pages |
| EU roaming | Paid pass needed | Included, 12GB |
| Cheapest plan | £10.00/mo · 20GB | £6.00/mo · 5GB |
| Cheapest unlimited | £35.00/mo · rolling monthly | £20.00/mo · rolling monthly |
| 5G | Included | Included |
Monthly vs contractThe cost of not being tied in
- VOXI: 30GB+ only comes on rolling monthly plans (from £15.00/month).
- SMARTY: 30GB+ only comes on rolling monthly plans (from £10.00/month).
Read before you switchCatches worth knowing
5 plansEvery VOXI plan, by real monthly cost
What the columns mean
- Plan
- The network's own name for the plan. The coloured tags under it are the catches: intro prices, bonus data that ends, Clubcard-only prices, price rises and roaming limits.
- Data
- Your monthly UK data once any bonus data has ended. "Unlimited" is subject to the network's fair-use policy.
- Contract
- Rolling: a monthly plan you can leave any month. Its price is not fixed unless the network says so. 12m / 18m / 24m: a fixed-term contract for that many months, usually cheaper per month but you are tied in, and leaving early normally costs a fee. We have not collected exit fees, so check the network's terms.
- Real cost / month
- The average of every monthly payment across the whole contract (24 months for rolling plans), including intro prices ending and stated price rises. This is the number plans are ranked by, not the advertised price.
- Price over time
- Each block is a run of months at one price. Green is an intro price, grey the normal price, red the price after a stated rise. Taller means dearer.
- Total
- Everything you would pay across the contract (24 months for rolling plans).
- £/GB
- Real cost per month divided by the monthly data. Lower is better value. Not shown for unlimited plans.
- EU roaming
- Whether you can use your allowance in the EU at no extra cost, and any data cap while you are there.
| PlanThe network's own name for the plan. The coloured tags under it are the catches: intro prices, bonus data that ends, Clubcard-only prices, price rises and roaming limits. | DataYour monthly UK data once any bonus data has ended. "Unlimited" is subject to the network's fair-use policy. | ContractRolling: a monthly plan you can leave any month. Its price is not fixed unless the network says so. 12m / 18m / 24m: a fixed-term contract for that many months, usually cheaper per month but you are tied in, and leaving early normally costs a fee. We have not collected exit fees, so check the network's terms. | Real cost / monthThe average of every monthly payment across the whole contract (24 months for rolling plans), including intro prices ending and stated price rises. This is the number plans are ranked by, not the advertised price. | Price over timeEach block is a run of months at one price. Green is an intro price, grey the normal price, red the price after a stated rise. Taller means dearer. | TotalEverything you would pay across the contract (24 months for rolling plans). | £/GBReal cost per month divided by the monthly data. Lower is better value. Not shown for unlimited plans. | EU roamingWhether you can use your allowance in the EU at no extra cost, and any data cap while you are there. | |
|---|---|---|---|---|---|---|---|---|
£10 20GB + unlimited social (7 apps)20GB · Rolling monthly
| 20GB | Rolling | £10.00 | £240.00 24 months | £0.50 | paid pass required (European Roaming Pass from £2.60/day; 20GB fair use) | VOXI | |
£12 25GB + unlimited social, music, video25GB · Rolling monthly
| 25GB | Rolling | £12.00 | £288.00 24 months | £0.48 | paid pass required (European Roaming Pass from £2.60/day; 20GB fair use) | VOXI | |
£15 35GB + unlimited social, music, video35GB · Rolling monthly
| 35GB | Rolling | £15.00 | £360.00 24 months | £0.43 | paid pass required (European Roaming Pass from £2.60/day; 20GB fair use) | VOXI | |
£20 100GB + unlimited social, music, video100GB · Rolling monthly
| 100GB | Rolling | £20.00 | £480.00 24 months | £0.20 | paid pass required (European Roaming Pass from £2.60/day; 20GB fair use) | VOXI | |
£35 UnlimitedUnlimited · Rolling monthly
| Unlimited | Rolling | £35.00 | £840.00 24 months | — | paid pass required (European Roaming Pass from £2.60/day; 20GB fair use) | VOXI |
8 plansEvery SMARTY plan, by real monthly cost
| PlanThe network's own name for the plan. The coloured tags under it are the catches: intro prices, bonus data that ends, Clubcard-only prices, price rises and roaming limits. | DataYour monthly UK data once any bonus data has ended. "Unlimited" is subject to the network's fair-use policy. | ContractRolling: a monthly plan you can leave any month. Its price is not fixed unless the network says so. 12m / 18m / 24m: a fixed-term contract for that many months, usually cheaper per month but you are tied in, and leaving early normally costs a fee. We have not collected exit fees, so check the network's terms. | Real cost / monthThe average of every monthly payment across the whole contract (24 months for rolling plans), including intro prices ending and stated price rises. This is the number plans are ranked by, not the advertised price. | Price over timeEach block is a run of months at one price. Green is an intro price, grey the normal price, red the price after a stated rise. Taller means dearer. | TotalEverything you would pay across the contract (24 months for rolling plans). | £/GBReal cost per month divided by the monthly data. Lower is better value. Not shown for unlimited plans. | EU roamingWhether you can use your allowance in the EU at no extra cost, and any data cap while you are there. | |
|---|---|---|---|---|---|---|---|---|
| 5GB5GB · Rolling monthly | 5GB | Rolling | £6.00 | £144.00 24 months | £1.20 | included (12GB fair use) | SMARTY | |
16GB16GB · Rolling monthly
| 16GB | Rolling | £8.00 | £192.00 24 months | £0.50 | included (12GB fair use) | SMARTY | |
| 20GB20GB · Rolling monthly | 20GB | Rolling | £9.00 | £216.00 24 months | £0.45 | included (12GB fair use) | SMARTY | |
| 40GB40GB · Rolling monthly | 40GB | Rolling | £10.00 | £240.00 24 months | £0.25 | included (12GB fair use) | SMARTY | |
100GB100GB · Rolling monthly
| 100GB | Rolling | £12.00 | £288.00 24 months | £0.12 | included (12GB fair use) | SMARTY | |
| 150GB150GB · Rolling monthly | 150GB | Rolling | £15.00 | £360.00 24 months | £0.10 | included (12GB fair use) | SMARTY | |
| 200GB200GB · Rolling monthly | 200GB | Rolling | £17.00 | £408.00 24 months | £0.09 | included (12GB fair use) | SMARTY | |
UnlimitedUnlimited · Rolling monthly
| Unlimited | Rolling | £20.00 | £480.00 24 months | — | included (12GB fair use) | SMARTY |
The small print, in large printWhat these numbers don't tell you
- Real cost / month assumes you join on 2 October 2026 and stay for the whole contract. Rolling plans are costed over 24 months at today's price; a rolling plan's price is not fixed unless the network says so, but you can leave any month.
- Stated price rises are included where the network publishes them in pounds and pence. Where a network says nothing about rises, we assume none, which may flatter it.
- Not included yet: early exit fees on contracts, speed caps, fair-use limits on "unlimited" data, tethering limits and charges for going over your allowance. We have not collected these, so we make no claims about them.
- £/GB uses the ongoing allowance, not temporary bonus data.
- Price over time bars: green months are an intro price, grey the normal price, red months after a stated rise. Bar height is that month's price.
- Coverage depends on where you live. Check your postcode on Ofcom's coverage checker.