Three SIM only deals
30 Three SIM only plans in our comparison, from £6 a month, 4 with unlimited data, 4 on rolling one-month terms. Data, price and contract length on each, with any mid-contract rise stated.
Deals come from our comparison partner and MoneyHQ may earn a commission if you take one.
Three SIM only plans right now
30 plans, £6 to £31.50 a month. 4 with unlimited data. 30 on 5G. 4 rolling one-month. 26 state a mid-contract rise.
| Data | A month | Contract | Sold by | Rise |
|---|---|---|---|---|
| 1GB · 5G | £6 | 24 months | Fonehouse | £7.80 from Apr 2027, then £9.60 from Apr 2028 |
| 12GB · 5G | £7 | 12 months | Mobile Phones Direct | £8.90 from Apr 2027 |
| 8GB · 5G | £7 | 12 months | Mobile Phones Direct | £8.90 from Apr 2027 |
| 30GB · 5G | £7 | 12 months | 3 Store | £8.90 from Apr 2027 |
| 8GB · 5G | £7 | 12 months | Fonehouse | £8.90 from Apr 2027 |
| 8GB · 5G | £8 | 24 months | Fonehouse | £9.90 from Apr 2027, then £11.80 from Apr 2028 |
| 30GB · 5G | £8.75 | 12 months | Mobile Phones Direct | £10.65 from Apr 2027 |
| 12GB · 5G | £9 | 12 months | Fonehouse | £10.90 from Apr 2027 |
Figures read from our comparison partner’s feed on 17 September 2026. Prices, allowances and rises are stated by each provider and can change.
Three SIM only: questions people ask
What is the lowest Three SIM only price?
On 17 September 2026 the lowest monthly price we saw on Three was £6 a month for 1GB on 24 months. That deal states a rise: £7.80 from Apr 2027, then £9.60 from Apr 2028.
How much is unlimited data on Three?
The lowest unlimited-data price we saw on Three was £14.50 a month on 12 months, one of 4 unlimited plans in the comparison.
Can I get a Three SIM with no contract?
Yes: 4 of the 30 Three plans we saw are rolling one-month plans you can leave with a month's notice.
Do Three SIM only prices rise mid-contract?
26 of the 30 plans state a rise, shown as a pound amount and a date on each deal above. Rolling plans can change price with notice but carry no lock-in.
Are Three SIM only deals 5G?
30 of the 30 plans we saw are 5G. Your phone must support 5G and you need 5G coverage where you use it.