Cheapest O2 SIM only deals
O2 has a variety of SIM only deals 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
3 GB
allowance
MINUTES
Unlimited
allowance
PRICE
£16
per month
Airtime plan will increase every April bill thereafter. Price will be £17.80 from Apr 2026. Airtime plan will increase every April bill thereafter. Price will be £19.60 from Apr 2027.
Mobile SIM Deal
24 months
DATA
10 GB
allowance
MINUTES
Unlimited
allowance
PRICE
£17.99
per month
Airtime plan will increase every April bill thereafter. Price will be £19.79 from Apr 2026. Airtime plan will increase every April bill thereafter. Price will be £21.59 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 £20.80 from Apr 2026. Airtime plan will increase every April bill thereafter. Price will be £22.60 from Apr 2027.
Mobile SIM Deal
24 months
DATA
150 GB
allowance
MINUTES
Unlimited
allowance
PRICE
£19.99
per month
Airtime plan will increase every April bill thereafter. Price will be £21.79 from Apr 2026. Airtime plan will increase every April bill thereafter. Price will be £23.59 from Apr 2027.
Mobile SIM Deal
24 months
DATA
20 GB
allowance
MINUTES
Unlimited
allowance
PRICE
£20
per month
Airtime plan will increase every April bill thereafter. Price will be £21.80 from Apr 2026. Airtime plan will increase every April bill thereafter. Price will be £23.60 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 £22.79 from Apr 2026. Airtime plan will increase every April bill thereafter. Price will be £24.59 from Apr 2027.
Mobile SIM Deal
24 months
DATA
40 GB
allowance
MINUTES
Unlimited
allowance
PRICE
£21.99
per month
Airtime plan will increase every April bill thereafter. Price will be £23.79 from Apr 2026. Airtime plan will increase every April bill thereafter. Price will be £25.59 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 £23.80 from Apr 2026. Airtime plan will increase every April bill thereafter. Price will be £25.60 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 £24.80 from Apr 2026. Airtime plan will increase every April bill thereafter. Price will be £26.60 from Apr 2027.
Mobile SIM Deal
24 months
DATA
50 GB
allowance
MINUTES
Unlimited
allowance
PRICE
£23
per month
Airtime plan will increase every April bill thereafter. Price will be £24.80 from Apr 2026. Airtime plan will increase every April bill thereafter. Price will be £26.60 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 £25.80 from Apr 2026. Airtime plan will increase every April bill thereafter. Price will be £27.60 from Apr 2027.
Showing 1 to 10 of 32 results
