Last updated: Thursday 12 November 2026
SMARTY or VOXI: which is better? For plain data at the lowest price, SMARTY. As of 12 November 2026, SMARTY’s own site lists unlimited data for £20 a month and 100GB for £12, while VOXI charges £35 for unlimited and £20 for 300GB on its current triple-data offer. VOXI is the better pick if most of your data goes on social media, music and video apps, because every VOXI plan includes unlimited use of selected apps in the UK on top of the allowance. Both are 30-day rolling plans with no contract, and both now belong to VodafoneThree. Through the SMARTY links on this page, new customers can get 50GB for £8 a month, as of 11 November 2026.
This SwitchSquid guide compares the two cheapest no-contract brands in the VodafoneThree group on price, data, roaming and coverage. VOXI prices are from VOXI’s plans page and SMARTY’s standard prices from SMARTY’s site, both as of 12 November 2026. We may earn a commission if you buy through the SMARTY links on this page. It does not change the price you pay. There is no VOXI link on this page; we include VOXI because it’s a fair alternative.
SMARTY 50GB for £8 a month through our link
- 50GB with unlimited UK calls and texts for £8 a month through our link, rolling monthly, as of 11 November 2026
- New SMARTY customers who order through this link and activate within 14 days; no contract and no credit check
- Main limitation: no unlimited social or video apps like VOXI’s, so confirm 50GB and £8 in the basket before you pay
SMARTY vs VOXI at a glance
SMARTY | VOXI | |
|---|---|---|
Owner | VodafoneThree (SMARTY is a trading name of Hutchison 3G UK) | VodafoneThree (“VOXI by Vodafone”) |
Network | Three’s network; SMARTY quotes 99% UK outdoor population 4G coverage | The combined Vodafone and Three network, VOXI says |
Contract | Rolling monthly, no contract | Rolling 30 days, no contract |
Cheapest plan | 5GB for £6 | 20GB for £10 |
Mid-size data | 100GB for £12 (£10 through our link, as of 9 November 2026) | 25GB tripled to 75GB for £12, offer ends 26 November 2026 |
Big data | 200GB for £17 | 100GB tripled to 300GB for £20, offer ends 26 November 2026 |
Unlimited data | £20 | £35 |
Unlimited social or video apps | Not included | Included on every plan (7 or 20 apps, depending on plan) |
EU roaming | Up to 12GB of your allowance in the EU at no extra cost | You must buy a European Roaming Pass |
Price rises | SMARTY says no annual price rises on rolling plans | VOXI says your plan stays at the same monthly price |
eSIM | Yes | Yes |
SMARTY’s homepage was also advertising 80GB for £10 a month as a double-data offer on 12 November 2026. Prices are for new customers and can change at any time, so check the price in your basket.
Price: which is cheaper, SMARTY or VOXI?
On plain data, SMARTY is cheaper at almost every size. Its unlimited plan is £20 a month against VOXI’s £35, a gap of £15 a month or £180 a year. At the large end, SMARTY’s 200GB plan is £17, while VOXI’s 300GB is £20 on its triple-data offer; if you would really use 300GB, VOXI is the better price per gigabyte while that offer runs to 26 November.
At the everyday end, VOXI’s £12 plan gives 75GB on its current offer, against SMARTY’s 100GB at £12 on its own site, or 50GB for £8 through our link for new customers. VOXI’s cheapest plan is 20GB for £10, while SMARTY starts at 5GB for £6 and 16GB for £8. If you use under 20GB a month, SMARTY’s smaller plans cost less.
Data you need | SMARTY price | VOXI price | Cheaper for plain data |
|---|---|---|---|
Light (under 20GB) | 16GB for £8, or 20GB for £9 | 20GB for £10 | SMARTY |
Everyday (50GB to 100GB) | 50GB for £8 through our link; 100GB for £12 (£10 through our link) | 75GB for £12 (offer to 26 November) | SMARTY |
Heavy (200GB to 300GB) | 200GB for £17 | 300GB for £20 (offer to 26 November) | Close: VOXI gives more data per pound |
Unlimited | £20 | £35 | SMARTY, by £15 a month |
Prices are from each brand’s own site on 12 November 2026, except where marked “through our link”, which is the price new customers get through the SMARTY links on this page, as of the date shown. Over a year, the unlimited gap alone is £180.
SMARTY 100GB for £10 a month through our link
- 100GB with unlimited UK calls and texts, £10 a month through our link (£12 on SMARTY’s own site), as of 9 November 2026
- £120 over 12 months at that price, against £144 for VOXI’s £12 plan or £240 for its 300GB plan
- Main limitation: no data-free social apps, and the link price is for new customers only
Why is VOXI so cheap, and is VOXI actually good?
VOXI runs online only, with no shops, and sells 30-day plans rather than contracts, which keeps its costs down. Its selling point is unlimited app data: depending on the plan, unlimited use in the UK of up to 20 social media, music and video apps without touching your allowance. Voice and video calls inside those apps still count towards your data, and third-party ads, apps and websites aren’t included.
VOXI is good value if your phone is mostly Instagram, TikTok, YouTube and Spotify. A 20GB VOXI plan with unlimited app data can feel bigger than a 50GB plan elsewhere for that kind of user. It is less good value if you mainly browse, use maps or hotspot a laptop, because that all comes out of the main allowance, and if you travel to Europe often, because roaming needs a paid European Roaming Pass. Our VOXI review goes into more detail.
Why is SMARTY so cheap?
SMARTY also sells online only, with no shops, no contract and no credit check, and it piggybacks on Three’s network. SMARTY says it doesn’t put annual price rises on its rolling monthly plans. It keeps the product simple: data, calls and texts, with up to 12GB of your allowance usable in the EU. It doesn’t include free app data like VOXI. Our SMARTY review and SMARTY Black Friday guide cover its current offers.
Which has better coverage, SMARTY or VOXI?
VOXI uses what it calls the combined Vodafone and Three network, and SMARTY runs on Three, quoting 99% UK outdoor population 4G coverage. Both belong to VodafoneThree, so coverage is closer than it used to be, but your own street is what counts. Check both on Ofcom’s mobile coverage checker for your home and work postcodes before you order. Because both are 30-day plans, you can also try one for a month and move if the signal disappoints.
Fit summary
Choose SMARTY if: you want the cheapest plain data, unlimited data for £20 rather than £35, EU roaming without buying a pass, or a small plan under £10.
Choose VOXI if: most of your data goes on social, music and video apps, or you’d use 300GB a month while the triple-data offer runs to 26 November 2026.
Look at another network if: Three’s and Vodafone’s signal is weak where you live. Our VOXI vs giffgaff and giffgaff vs SMARTY guides compare both with giffgaff on O2.
Important conditions
VOXI’s triple-data prices end on 26 November 2026, according to VOXI; after that, check the plan’s standard data.
The SMARTY prices through our link are for new customers and are as of the dates shown; confirm the price and data in your basket.
VOXI’s app data excludes in-app voice and video calls, and the same apps count towards your allowance when you roam, under a 20GB fair usage limit.
Unlimited plans on both brands are subject to their acceptable use policies.
How to switch and keep your number
Check coverage at home and work on Ofcom’s checker.
Text PAC to 65075 to get your free porting code, valid for 30 days.
Order the SIM or eSIM and enter your PAC code at checkout or in the app.
Your number usually moves within one working day, and your old plan ends automatically.
Light user? SMARTY 40GB for £7 a month through our link
- 40GB with unlimited UK calls and texts for £7 a month through our link, as of 11 November 2026, against VOXI’s 20GB for £10
- Rolling monthly with no credit check; keep your number with a free PAC code
- Main limitation: check Three coverage at your postcode first, and confirm the price in your basket
FAQ
Is SMARTY cheaper than VOXI?
For plain data, yes. As of 12 November 2026, SMARTY’s own site lists unlimited data for £20 a month and 100GB for £12, while VOXI charges £35 for unlimited and £12 for 75GB on its triple-data offer. VOXI’s 300GB for £20 beats SMARTY’s 200GB for £17 on price per gigabyte while that offer runs to 26 November.
Are SMARTY and VOXI the same company?
They have the same owner. SMARTY is a trading name of Hutchison 3G UK and VOXI is “VOXI by Vodafone”, and both now sit within VodafoneThree. They sell separate plans with different prices, so moving between them is an ordinary switch with a PAC code.
Which network does SMARTY use?
SMARTY uses Three’s network and quotes 99% UK outdoor population 4G coverage. VOXI says it uses the combined Vodafone and Three network. Check both at your postcode on Ofcom’s coverage checker before you choose.
Why is VOXI so cheap?
VOXI sells online only, with no shops and no contracts. It also gives unlimited use of selected social, music and video apps in the UK on its plans, which makes a small allowance go further for heavy app users.
Can I use SMARTY or VOXI in Europe?
SMARTY lets you use up to 12GB of your monthly allowance in the EU at no extra cost, according to its site. VOXI says you must buy a European Roaming Pass to roam, and its free app data counts towards your allowance abroad.
Does SMARTY or VOXI put prices up every year?
SMARTY says it doesn’t do annual price rises on its rolling monthly plans. VOXI says your plan stays at the same monthly price. Both are 30-day plans, so you can leave at any time if that changes.
Which is better for social media, SMARTY or VOXI?
VOXI. Every VOXI plan includes unlimited use of selected social media apps in the UK, and higher plans add music and video apps. SMARTY counts all app use against your allowance, so pick a bigger SMARTY plan if you stream a lot.
