O2 30-day SIM only deals
O2 30-day SIM only deals are a great way to try out O2 before committing to a longer contract. If you need something different, O2 are have a range of other SIM only deals available:
Our top pick
Mobile SIM Deal
1 month
DATA
150 GB
allowance
MINUTES
Unlimited
allowance
PRICE
£32.00
per month
Airtime plan will increase every April bill thereafter. Price will be £33.80 from Apr 2026. Airtime plan will increase every April bill thereafter. Price will be £35.60 from Apr 2027.
Mobile SIM Deal
1 month
DATA
Unlimited
allowance
MINUTES
Unlimited
allowance
PRICE
£38.00
per month
Airtime plan will increase every April bill thereafter. Price will be £39.80 from Apr 2026. Airtime plan will increase every April bill thereafter. Price will be £41.60 from Apr 2027.
Mobile SIM Deal
1 month
DATA
100 GB
allowance
MINUTES
Unlimited
allowance
PRICE
£30.00
per month
Airtime plan will increase every April bill thereafter. Price will be £31.80 from Apr 2026. Airtime plan will increase every April bill thereafter. Price will be £33.60 from Apr 2027.
Mobile SIM Deal
1 month
DATA
40 GB
allowance
MINUTES
Unlimited
allowance
PRICE
£28.00
per month
Airtime plan will increase every April bill thereafter. Price will be £29.80 from Apr 2026. Airtime plan will increase every April bill thereafter. Price will be £31.60 from Apr 2027.
Mobile SIM Deal
1 month
DATA
20 GB
allowance
MINUTES
Unlimited
allowance
PRICE
£26.00
per month
Airtime plan will increase every April bill thereafter. Price will be £27.80 from Apr 2026. Airtime plan will increase every April bill thereafter. Price will be £29.60 from Apr 2027.
Mobile SIM Deal
1 month
DATA
3 GB
allowance
MINUTES
Unlimited
allowance
PRICE
£22.00
per month
Airtime plan will increase every April bill thereafter. Price will be £23.80 from Apr 2026. Airtime plan will increase every April bill thereafter. Price will be £25.60 from Apr 2027.
Mobile SIM Deal
1 month
DATA
10 GB
allowance
MINUTES
Unlimited
allowance
PRICE
£24.00
per month
Airtime plan will increase every April bill thereafter. Price will be £25.80 from Apr 2026. Airtime plan will increase every April bill thereafter. Price will be £27.60 from Apr 2027.