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
per month
Airtime plan will increase every April bill thereafter. Price will be £34.50 from Apr 2026. Airtime plan will increase every April bill thereafter. Price will be £37 from Apr 2027.
Mobile SIM Deal
1 month
DATA
Unlimited
allowance
MINUTES
Unlimited
allowance
PRICE
£38
per month
Airtime plan will increase every April bill thereafter. Price will be £40.50 from Apr 2026. Airtime plan will increase every April bill thereafter. Price will be £43 from Apr 2027.
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Mobile SIM Deal
1 month
DATA
100 GB
allowance
MINUTES
Unlimited
allowance
PRICE
£30
per month
Airtime plan will increase every April bill thereafter. Price will be £32.50 from Apr 2026. Airtime plan will increase every April bill thereafter. Price will be £35 from Apr 2027.
Mobile SIM Deal
1 month
DATA
40 GB
allowance
MINUTES
Unlimited
allowance
PRICE
£28
per month
Airtime plan will increase every April bill thereafter. Price will be £30.50 from Apr 2026. Airtime plan will increase every April bill thereafter. Price will be £33 from Apr 2027.
Mobile SIM Deal
1 month
DATA
20 GB
allowance
MINUTES
Unlimited
allowance
PRICE
£26
per month
Airtime plan will increase every April bill thereafter. Price will be £28.50 from Apr 2026. Airtime plan will increase every April bill thereafter. Price will be £31 from Apr 2027.
Mobile SIM Deal
1 month
DATA
3 GB
allowance
MINUTES
Unlimited
allowance
PRICE
£22
per month
Airtime plan will increase every April bill thereafter. Price will be £24.50 from Apr 2026. Airtime plan will increase every April bill thereafter. Price will be £27 from Apr 2027.
Mobile SIM Deal
1 month
DATA
10 GB
allowance
MINUTES
Unlimited
allowance
PRICE
£24
per month
Airtime plan will increase every April bill thereafter. Price will be £26.50 from Apr 2026. Airtime plan will increase every April bill thereafter. Price will be £29 from Apr 2027.
