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    Phones

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    • Apple iPhone
    • iPhone 17
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    Tablets, laptops and dongles

    • Tablets
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    • Flexible tariffs
    • Upgrade with O2 Switch Up
    • Fair Deal for O2 customers
    • Peace of mind with O2 Insure
    • Tech news and inspiration

    Saving you money

    • Data rollover
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    • Auto-save plans
    • Multisave discounts
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    Stay connected

    • Our cutting-edge network
    • 5G is here
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    • Check your coverage
    • Travel with EU roaming
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Find the best SIM for your device

Explore our SIM deals

Choose your SIM

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Pay Monthly SIMs

Keep the phone you love and get all the data you need. Take your pick from our 12 and 24-month Pay Monthly SIM Only deals.

Choose a SIM
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Pay As You Go SIMs

Enjoy the perks of a Pay As You Go SIM, with our Big Bundles and Rolling Plans

Get yours

Latest Pay Monthly offers

40GB Classic Plan £17 a month

Get a 24-month SIM Only at an epic low price until 18 March. Rises to £19.50 April ’26, £22 April ’27.

See SIM Only offer

Unlimited Plus Plan £22.99 a month

Grab a great low price until 18 March on a 24-month SIM Only. Rises to £25.49 April ’26, £27.99 April ’27.

See more

100GB Classic Plan £19 a month

Irresistible price on SIM Only across 24 months. Rises to £21.50 April ’26, £24 April ’27. Offer ends 18 March.

Explore this deal

Pay As You Go SIMs

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Big Bundles

Enjoy awesome perks and great-value tariffs with unlimited minutes and texts

Dive in

Rolling plans

The easiest way to pay without a contract

Find out more
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Need to top up?

Find out how to top up your Pay As You Go devices

See your options

Perks for being with O2

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Data rollover

Didn’t get through all your data? Let’s keep it rolling.

Find out more
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Roam freely in the EU

Unlike other major networks, we don't charge extra for EU roaming, up to 25GB

Get on board
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Priority

Jump into a world of exclusive rewards and experiences. It’s our way of saying thanks for being with us.

Let’s go

Looking for another SIM?

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Tablet SIMs

Pick a SIM for your tablet or dongle

See the deals
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Smartwatch eSIMs

Connect your cellular smartwatch with a Pay Monthly eSIM

See smartwatch eSIMs
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Mobile broadband SIMs

Stay connected while you’re on the move

Find out more
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