O2 unlimited data sim only deals
O2 has a variety of unlimited data SIMs available on different contract lengths. If you need something different, O2 are have a range of other SIM only deals available:
Our top pick
Mobile SIM Deal
24 months
DATA
Unlimited
allowance
MINUTES
Unlimited
allowance
PRICE
£25.79
per month
Includes: Choose 6 months of Disney+ Standard, Amazon Prime, or more.
Airtime plan will increase every April bill thereafter. Price will be £25.79 from Apr 2026.
Mobile SIM Deal
24 months
DATA
Unlimited
allowance
MINUTES
Unlimited
allowance
PRICE
£33.80
per month
Includes: Choose 3 months of Disney+ Standard, Amazon Prime, or more.
Airtime plan will increase every April bill thereafter. Price will be £33.80 from Apr 2026.
Mobile SIM Deal
12 months
DATA
Unlimited
allowance
MINUTES
Unlimited
allowance
PRICE
£35.00
per month
Includes: Choose 3 months of Disney+ Standard, Amazon Prime, or more.
Airtime plan will increase every April bill thereafter. Price will be £36.80 from Apr 2026. Airtime plan will increase every April bill thereafter. Price will be £38.60 from Apr 2027.
Mobile SIM Deal
12 months
DATA
Unlimited
allowance
MINUTES
Unlimited
allowance
PRICE
£36.99
per month
Airtime plan will increase every April bill thereafter. Price will be £38.79 from Apr 2026. Airtime plan will increase every April bill thereafter. Price will be £40.59 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
24 months
DATA
Unlimited
allowance
MINUTES
Unlimited
allowance
PRICE
£44.29
per month
Airtime plan will increase every April bill thereafter. Price will be £44.29 from Apr 2026.
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 £47.29 from Apr 2026. Airtime plan will increase every April bill thereafter. Price will be £49.09 from Apr 2027.