SIM only · Providers
One of the UK's four mobile networks, now part of VodafoneThree.
3 deals
Three
Download speed capped at 100Mbps. No roaming included (Lite tier).
Check Three coverage at your postcode£22/mo
Total cost: £583 · avg £24.30/mo
View dealChecked 26 Oct 2026
Three
Full speed (no 100Mbps cap). No roaming included.
Check Three coverage at your postcode£26/mo
Total cost: £679 · avg £28.30/mo
View dealChecked 17 Oct 2026
Three
Download speed capped at 100Mbps. Includes Paramount+ for 24 months.
Check Three coverage at your postcode£28/mo
Total cost: £727 · avg £30.30/mo
View dealChecked 17 Oct 2026
What happens when you click View deal: you go to the provider's own site to check your address and order. Your contract and any problems with installation or billing are with the provider. MoneyRoute never takes payment or your details.
No deals match. Try fewer filters.
Compare Three with other providers at the same data allowance: Unlimited SIM only deals
Promo codes: we don't list them, because SIM only discounts are usually built into the advertised price rather than unlocked with a code. Codes on voucher sites are often expired or for other products.
Already with Three? These prices are for new customers. Near the end of your contract, Three will often offer a similar price to keep you, so compare it with the deals above before you agree.
Three is part of VodafoneThree, formed when Vodafone and Three merged in 2025.
Opensignal's January 2026 report found Three had the fastest 5G speeds.
The price you sign up at, the price after every rise in the contract, and the total including fees. Three's rises: £2.30 a month every 1 April.
| Deal | Starting price | After rises | Total |
|---|---|---|---|
| Unlimited Lite | £22/mo | £26.60/mo | £583 over 24 months |
| Unlimited Lite+ | £26/mo | £30.60/mo | £679 over 24 months |
| Unlimited Complete | £28/mo | £32.60/mo | £727 over 24 months |
Three's top-ranked deal, Unlimited Lite, against the best deal from each other provider in the same data range (Unlimited), by monthly price.
| Provider | Deal | Monthly price | Contract |
|---|---|---|---|
| Three | Unlimited Lite | £22/mo | 24 months |
| Lyca Mobile | Unlimited | £12.50/mo | Rolling |
| iD Mobile | Unlimited 12-month | £17/mo | 12 months |
| SMARTY | Unlimited | £20/mo | Rolling |
| giffgaff | Unlimited 18-month | £25/mo | 18 months |
| O2 | Unlimited Plus | £25.49/mo | 24 months |
On the same network as Three: iD Mobile, SMARTY.
Ofcom received 2 complaints for every 100,000 Three pay-monthly mobile customers in January to March 2026, the same as the average of 2. In October to December 2025 it was 1.
| Ofcom measure (2024) | Three | Average |
|---|---|---|
| Satisfied with how a complaint was handled | 51% | 61% |
Help is available in the Three app, by live chat (8am to 10pm on weekdays, 9am to 8pm at weekends) and in stores.
Sources: Ofcom telecoms complaints (January to March 2026, published 23 July 2026) · Ofcom: comparing customer service (2024 data)
The cheapest Three deal we list is Unlimited Lite at £22 a month, or £583 over 24 months including rises and fees. The 3 Three deals we list range from £22 to £28 a month.
Yes. On the Three contracts we list, the price goes up £2.30 a month every 1 April. Each deal above shows the new price and when it starts.
On some plans. 1 of the 3 Three plans we list include it; the others charge extra.
Three is one of the UK's four mobile networks. Budget brands on its network include iD Mobile, SMARTY.
Three doesn't have its own mobile social tariff. Its budget brand SMARTY offers unlimited data for £12 a month with no annual price rises and no credit check, for people on eligible benefits.
We don't list promo codes, because SIM only discounts are usually built into the advertised price rather than unlocked with a code. Every current Three price we list is above, checked against Three's own site.
Usually not directly: these prices are for new customers. Near the end of your contract, Three will often offer you a similar price to stay, so compare it with the deals above before you agree.
Order a SIM or eSIM from Three. To keep your number, text PAC to 65075 from your current phone, then give the code to Three; your number usually moves within one working day, and your old contract ends when it does. Check whether you'll owe an exit fee before you switch.
Sources, checked October 2026: vodafone.co.uk · three.co.uk · three.co.uk · three.co.uk · smarty.co.uk · insights.opensignal.com · three.co.uk