You might find our USA site more useful

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:

O2 30-day SIM only dealsO2 24-month SIM only dealsO2 unlimited data SIMsCheapest O2 SIM only dealsO2 Mobile Broadband SIM onlyO2 Tablet SIM onlyO2 5G SIMs
Our top pick
logo
Unlimited speed
5G+

SIM Only Classic

Data
100 GB
(Unlimited speed included)
Allowances
Unlimited minutes
Unlimited texts
Contract
12 months
Total cost: £144
Price
£12per month
  • Price becomes £14.50 on 1 April 2027
Boosted Broadband Speeds for Virgin Media Customers
Get deal
logo
Unlimited speed
5G+

SIM Only Classic

Data
250 GB
(Unlimited speed included)
Allowances
Unlimited minutes
Unlimited texts
Contract
12 months
Total cost: £180
Price
£15per month
  • Price becomes £17.50 on 1 April 2027
Get deal

UNLOCK EXCLUSIVE SAVINGS & DEALS

Join our savvy community and get insider access to the best broadband, power, mobile, and shopping deals – plus expert tips and money-saving guides delivered straight to your inbox.

logo
Unlimited speed
5G+

SIM Only Classic

Data
75 GB
(Unlimited speed included)
Allowances
Unlimited minutes
Unlimited texts
Contract
12 months
Total cost: £120
Price
£10per month
  • Price becomes £12.50 on 1 April 2027
Get deal
logo
Unlimited speed
5G+

SIM Only Classic

Data
40 GB
(Unlimited speed included)
Allowances
Unlimited minutes
Unlimited texts
Contract
12 months
Total cost: £96
Price
£8per month
  • Price becomes £10.50 on 1 April 2027
Get deal
logo
Unlimited speed
5G+

SIM Only Classic

Data
50 GB
(Unlimited speed included)
Allowances
Unlimited minutes
Unlimited texts
Contract
12 months
Total cost: £108
Price
£9per month
  • Price becomes £11.50 on 1 April 2027
Get deal
logo
Unlimited speed
5G+

SIM Only Classic

Data
10 GB
(Unlimited speed included)
Allowances
Unlimited minutes
Unlimited texts
Contract
12 months
Total cost: £84
Price
£7per month
  • Price becomes £9.50 on 1 April 2027
Get deal
logo
Unlimited speed
5G+

SIM Only Classic

Data
150 GB
(Unlimited speed included)
Allowances
Unlimited minutes
Unlimited texts
Contract
12 months
Total cost: £168
Price
£14per month
  • Price becomes £16.50 on 1 April 2027
Get deal
logo
Unlimited speed
5G+

SIM Only Ultimate 3GB

Data
3 GB
(Unlimited speed included)
Allowances
Unlimited minutes
Unlimited texts
Contract
12 months
Total cost: £335.88
Price
£27.99per month
  • Price becomes £30.49 on 1 April 2027
Get deal
logo
Unlimited speed
5G+

SIM Only Ultimate Unlimited

Data
Unlimited
(Unlimited speed included)
Allowances
Unlimited minutes
Unlimited texts
Contract
12 months
Total cost: £503.88
Price
£41.99per month
  • Price becomes £44.49 on 1 April 2027
Get deal
logo
Unlimited speed
5G+

SIM Only Ultimate 20GB

Data
20 GB
(Unlimited speed included)
Allowances
Unlimited minutes
Unlimited texts
Contract
12 months
Total cost: £371.88
Price
£30.99per month
  • Price becomes £33.49 on 1 April 2027
Get deal
logo
Unlimited speed
5G+

SIM Only Ultimate 100GB

Data
100 GB
(Unlimited speed included)
Allowances
Unlimited minutes
Unlimited texts
Contract
12 months
Total cost: £419.88
Price
£34.99per month
  • Price becomes £37.49 on 1 April 2027
Get deal

Showing 1 to 10 of 18 results