O2 12-month SIM only deals
O2 12-month SIM only deals are a great way to use O2 if you don't need a new phone. If you need something different, O2 are have a range of other SIM only deals available:
Our top pick
Mobile SIM Deal
12 months
DATA
40 GB
allowance
MINUTES
Unlimited
allowance
PRICE
£24.99
per month
Airtime plan will increase every April bill thereafter. Price will be £27.49 from Apr 2026. Airtime plan will increase every April bill thereafter. Price will be £29.99 from Apr 2027.
Mobile SIM Deal
12 months
DATA
150 GB
allowance
MINUTES
Unlimited
allowance
PRICE
£28.99
per month
Airtime plan will increase every April bill thereafter. Price will be £31.49 from Apr 2026. Airtime plan will increase every April bill thereafter. Price will be £33.99 from Apr 2027.
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Mobile SIM Deal
12 months
DATA
Unlimited
allowance
MINUTES
Unlimited
allowance
PRICE
£35
per month
Airtime plan will increase every April bill thereafter. Price will be £37.50 from Apr 2026. Airtime plan will increase every April bill thereafter. Price will be £40 from Apr 2027.
Mobile SIM Deal
12 months
DATA
100 GB
allowance
MINUTES
Unlimited
allowance
PRICE
£27
per month
Airtime plan will increase every April bill thereafter. Price will be £29.50 from Apr 2026. Airtime plan will increase every April bill thereafter. Price will be £32 from Apr 2027.
Mobile SIM Deal
12 months
DATA
10 GB
allowance
MINUTES
Unlimited
allowance
PRICE
£20.99
per month
Airtime plan will increase every April bill thereafter. Price will be £23.49 from Apr 2026. Airtime plan will increase every April bill thereafter. Price will be £25.99 from Apr 2027.
Mobile SIM Deal
12 months
DATA
3 GB
allowance
MINUTES
Unlimited
allowance
PRICE
£19
per month
Airtime plan will increase every April bill thereafter. Price will be £21.50 from Apr 2026. Airtime plan will increase every April bill thereafter. Price will be £24 from Apr 2027.
Mobile SIM Deal
12 months
DATA
20 GB
allowance
MINUTES
Unlimited
allowance
PRICE
£23
per month
Airtime plan will increase every April bill thereafter. Price will be £25.50 from Apr 2026. Airtime plan will increase every April bill thereafter. Price will be £28 from Apr 2027.
Mobile SIM Deal
12 months
DATA
40 GB
allowance
MINUTES
Unlimited
allowance
PRICE
£33.49
per month
Airtime plan will increase every April bill thereafter. Price will be £35.99 from Apr 2026. Airtime plan will increase every April bill thereafter. Price will be £38.49 from Apr 2027.
Mobile SIM Deal
12 months
DATA
Unlimited
allowance
MINUTES
Unlimited
allowance
PRICE
£45.49
per month
Airtime plan will increase every April bill thereafter. Price will be £47.99 from Apr 2026. Airtime plan will increase every April bill thereafter. Price will be £50.49 from Apr 2027.
Mobile SIM Deal
12 months
DATA
150 GB
allowance
MINUTES
Unlimited
allowance
PRICE
£37.49
per month
Airtime plan will increase every April bill thereafter. Price will be £39.99 from Apr 2026. Airtime plan will increase every April bill thereafter. Price will be £42.49 from Apr 2027.
Mobile SIM Deal
12 months
DATA
10 GB
allowance
MINUTES
Unlimited
allowance
PRICE
£29.49
per month
Airtime plan will increase every April bill thereafter. Price will be £31.99 from Apr 2026. Airtime plan will increase every April bill thereafter. Price will be £34.49 from Apr 2027.
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