O2
Home / Sim Only

Sim only

Learn more sim and pay as you go withO2

Find your perfect Pay Monthly SIM

Happy with your phone? Save with a Pay Monthly SIM only deal. Keep your number when switching networks and choose from flexible 30-day, 12-month, or 24-month plans. Browse our best SIM only contracts today.

Volt

Are you a Virgin Media broadband customer?

Get double data, boosted broadband speeds, and more when you're with both Virgin Media and O2.

Call Now
We offer 3 plan levels - Classic, Plus or Ultimate. See our comparison table
PLUS

150GB

Data

24 Month Airtime Plan

Unlimited UK Minutes & Texts

Offers Included

  • Save up to £168, get 150GB for £18.99. Ends 4 February.
  • Roam at no extra cost in 75 destinations worldwide, including the EU, USA, Australia and Mexico.
  • Take last month's unused data from your main allowance into the next, with data rollover.

Monthly

£18.99

£21.49 from

Apr 2026 bill

£23.99 from

Apr 2027 bill

Airtime Plan will increase every April bill thereafter by £2.50

CLASSIC

30GB

Data

24 Month Airtime Plan

Unlimited UK Minutes & Texts

Offers Included

  • Great low price. Get 30GB for £15. Ends 4 February.
  • Roam freely in the EU. Only on O2. Up to 25GB.
  • Choose 3 months of Disney+ Standard, Amazon Prime, or more.

Monthly

£15.00

£17.50 from

Apr 2026 bill

£20.00 from

Apr 2027 bill

Airtime Plan will increase every April bill thereafter by £2.50

CLASSIC

Unlimited

Data

Fair usage applies

24 Month Airtime Plan

Unlimited UK Minutes & Texts

Offers Included

  • Great low price. Get Unlimited data for £21. Ends 4 February.
  • Roam freely in the EU. Only on O2. Up to 25GB.
  • Choose 3 months of Disney+ Standard, Amazon Prime, or more.

Monthly

£21.00

£23.50 from

Apr 2026 bill

£26.00 from

Apr 2027 bill

Airtime Plan will increase every April bill thereafter by £2.50

Pay As You Go SIMs

Love the freedom of a Pay As You Go SIM. Tailor data to suit your lifestyle. Have a browse of our no-contract SIM cards and customise the cost to match your budget. Change or cancel anytime. No credit check. No commitment. And it's all contract-free. Have a browse of our Pay As You Go SIM cards below.

Total control with a Rolling plan

Enjoy a Pay As You Go SIM with no contract and no need to top up. Plus, roam in our Europe Zone up to 25GB.

If you're looking for even more flexibility and value for your money, why not try one of our new Rolling plans.

Our top pick

10GB

DATA

Unlimited UK Minutes

Unlimited UK Texts

includes data rollover up to 10GB

OFFERS INCLUDED

We cover roaming in our Europe zone as part of our tariffs, up to 25GB

Get up to 10% of your payments back with O2 Rewards

£10

A MONTH

30GB

DATA

Unlimited UK Minutes

Unlimited UK Texts

includes data rollover up to 30GB

OFFERS INCLUDED

We cover roaming in our Europe zone as part of our tariffs, up to 25GB

Get up to 10% of your payments back with O2 Rewards

Includes 100 International minutes to over 42 countries

£15

A MONTH

50GB

DATA

Unlimited UK Minutes

Unlimited UK Texts

includes data rollover up to 50GB

OFFERS INCLUDED

We cover roaming in our Europe zone as part of our tariffs, up to 25GB

Get up to 10% of your payments back with O2 Rewards

Includes 100 International minutes to over 42 countries

£20

A MONTH

Information about Pay Monthly plans, including device options, data allowances, and contract terms.

Details on Big Bundles, top-ups, and international calling rates for Pay As You Go customers.

Support and plans tailored for small businesses and large enterprises.