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Compare SIM Only deals

24-month contracts

Black Friday online exclusive
Offer ends:
20GB
Unlimited minutes and texts
    £15 a month
    24-month contract
    5GB
    Unlimited minutes and texts
      £13 a month
      24-month contract
      Extra 20GB data vs 12-month plan
      Offer ends:
      60GB(was 50GB)
      Unlimited minutes and texts
        BT Sport app included, wound 10 pounds a month
        app included
        worth £10 a month
        £20 a month
        24-month contract
        100GB
        Unlimited minutes and texts
          BT Sport app included, wound 10 pounds a month
          app included
          worth £10 a month
          Extra 40GB data vs 12-month plan
          £25 a month
          24-month contract
          Keep your number
          when you switch to us – it's easy.
          With another network? Just choose your SIM Only deal and we'll help switch you over.

          12-month contracts

          Our lowest ever price
          Offer ends:
          6GB(was 4GB)
          Unlimited minutes and texts
          • 12-month contracts: add more SIMs to save
          £13 a month
          12-month contract
          Deal ends
          16GB
          Unlimited minutes and texts
          • 12-month contracts: add more SIMs to save
          £17 a month
          12-month contract
          10GB on us
          Offer ends:
          40GB(was 30GB)
          Unlimited minutes and texts
          • 12-month contracts: add more SIMs to save
          BT Sport app included, wound 10 pounds a month
          app included
          worth £10 a month
          £20 a month
          12-month contract
          10GB on us
          Offer ends:
          60GB(was 50GB)
          Unlimited minutes and texts
          • 12-month contracts: add more SIMs to save
          BT Sport app included, wound 10 pounds a month
          app included
          worth £10 a month
          £25 a month
          12-month contract
          100GB
          Unlimited minutes and texts
          • 12-month contracts: add more SIMs to save
          BT Sport app included, wound 10 pounds a month
          app included
          worth £10 a month
          £30 a month
          12-month contract

          Benefits of SIM Only plans

          Switch to a BT SIM and keep your number

          Increase or decrease your data each month

          All our SIMs are 4G and 5G enabled

          Access to 5 million BT Wi-fi hotspots

          Roam Like Home in 47 countries

          30-day money-back guarantee

          Looking for your next handset?

          Check out our new Samsung range, available to order today.

          See Samsung phones

          BT Mobile offers

          Get £50 off selected phones with any SIM Only deal.

          Go to BT Shop

          Data Only SIM deals

          Need a SIM for your tablet or mobile broadband device?

          See Data Only SIM deals

          Already got mobile with us?

          Upgrade your plan

          Get more from your mobile: upgrade your plan, add a handset or add extra SIMs with Family SIM.

          Do more with mobile extras

          Manage your account and buy add-ons for data, speed and more.

          Get help with mobile

          How to get set up, check service status, fix common issues and more.

          Important information

          The legal stuff

          Δ If you sign up to a new contract or renew your contract for a Landline (including call charges, features, add-ons and plans), BT Mobile (including monthly add-ons, call, text and data charges), the monthly price will increase each year from March 2021. Other Landline (calling plans only), BT Mobile (plans only), BT Broadband, BT TV or BT Sport (including TV and Sport add-ons) the monthly price will increase each year from March 2022. These increases are based on the Consumer Price Index rate of inflation which is published in January each year plus 3.9%.