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Compare 12-month Data Only SIM deals

Benefits of Data Only SIM plans

Option to change your data monthly

Upgrade to a handset plan at any time

Access to 5 million BT Wi-fi hotspots

Roam Like Home in 47 countries

30-day money-back guarantee



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%.