Each additional SIM is at least 20% cheaper than getting a SIM on it's own.
Choose your Family SIM deal
How many SIMs do you need?
Each extra SIM has a 20% discount
How much data would you like per SIM?
data allowance each
4G and 5G enabled
Unlimited minutes and texts
Access to 5 million BT Wi-fi hotspots
30-day money-back guarantee
Most popular
£19Δ a month
12-month contract

Why Family SIM?

Save money
Each additional SIM is 20% cheaper than a SIM by itself.
Flexible plans
Additional SIMs can be added or removed if your needs change.
Stay in control
Manage the settings, usage and payments for all the SIMs in one place.
You can cancel your contract and get a refund within the first 30 days.

Looking for your next handset?

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

BT Mobile offers

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

Data Only SIM deals

Need a SIM for your tablet or mobile broadband device?

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%.