We've noticed that you're visiting our🇬🇧UKsite.You might find our USA site more useful(wehelpcompare.com)

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:

O2 30-day SIM only dealsO2 12-month SIM only dealsO2 24-month SIM only dealsO2 Mobile Broadband SIM onlyO2 Tablet SIM onlyO2 5G SIMs
Our top pick
logo

Mobile SIM Deal

24 months
DATA
40 GB
allowance
MINUTES
Unlimited
allowance
PRICE
£17.80
per month
Includes: Choose 3 months of Disney+ Standard, Amazon Prime, or more.
Airtime plan will increase every April bill thereafter. Price will be £17.80 from Apr 2026.
Get deal
logo

Mobile SIM Deal

24 months
DATA
3 GB
allowance
MINUTES
Unlimited
allowance
PRICE
£17.80
per month
Includes: Choose 3 months of Disney+ Standard, Amazon Prime, or more.
Airtime plan will increase every April bill thereafter. Price will be £17.80 from Apr 2026.
Get deal
logo

Mobile SIM Deal

12 months
DATA
3 GB
allowance
MINUTES
Unlimited
allowance
PRICE
£19.00
per month
Includes: Choose 3 months of Disney+ Standard, Amazon Prime, or more.
Airtime plan will increase every April bill thereafter. Price will be £20.80 from Apr 2026. Airtime plan will increase every April bill thereafter. Price will be £22.60 from Apr 2027.
Get deal
logo

Mobile SIM Deal

24 months
DATA
10 GB
allowance
MINUTES
Unlimited
allowance
PRICE
£19.79
per month
Includes: Choose 6 months of Disney+ Standard, Amazon Prime, or more.
Airtime plan will increase every April bill thereafter. Price will be £19.79 from Apr 2026.
Get deal
logo

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.
Get deal
logo

Mobile SIM Deal

24 months
DATA
100 GB
allowance
MINUTES
Unlimited
allowance
PRICE
£21.79
per month
Includes: Choose 6 months of Disney+ Standard, Amazon Prime, or more.
Airtime plan will increase every April bill thereafter. Price will be £21.79 from Apr 2026.
Get deal
logo

Mobile SIM Deal

24 months
DATA
20 GB
allowance
MINUTES
Unlimited
allowance
PRICE
£21.80
per month
Includes: Choose 3 months of Disney+ Standard, Amazon Prime, or more.
Airtime plan will increase every April bill thereafter. Price will be £21.80 from Apr 2026.
Get deal
logo

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.
Get deal
logo

Mobile SIM Deal

12 months
DATA
20 GB
allowance
MINUTES
Unlimited
allowance
PRICE
£23.00
per month
Includes: Choose 3 months of Disney+ Standard, Amazon Prime, or more.
Airtime plan will increase every April bill thereafter. Price will be £24.80 from Apr 2026. Airtime plan will increase every April bill thereafter. Price will be £26.60 from Apr 2027.
Get deal
logo

Mobile SIM Deal

24 months
DATA
40 GB
allowance
MINUTES
Unlimited
allowance
PRICE
£23.79
per month
Includes: Choose 6 months of Disney+ Standard, Amazon Prime, or more.
Airtime plan will increase every April bill thereafter. Price will be £23.79 from Apr 2026.
Get deal
logo

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.
Get deal

Showing 1 to 10 of 32 results