Discover why thousands of families have already joined Family SIM
Family SIM starts with a 12 month contract on the first SIM, but all subsequent SIMs you add are on flexible 30 day rolling plans.
Meaning family members can join and leave the plan whenever they like.
As the bill payer you can manage the plan yourself, or let others in your plan manage their own SIMs.
Use our Family SIM calculator to see how much you could save, based on your family's current monthly spend.'Use Family SIM calculator
If you have a BT Mobile smartphone plan or want to get one, you can still enjoy our Family SIM discounts. Simply add additional 30-day rolling SIMs to your plan.
You can choose to add family members or friends to your plan or get the benefit yourself by adding SIMs you might have for different devices.
You can add up to five Family SIMs to your account. You become the main account holder and are responsible for all charges.
Family SIMs have more flexible contract terms than standalone SIMs. When you add a Family SIM to an existing SIM Only plan, a new 12 month minimum term begins. All SIMs will have a 30-day rolling contract. If the plan ends up with just one SIM left, that will pick up what's left of the 12 month minimum term
If you know someone who already has a BT Mobile SIM, you can invite them to move to your Family SIM once you have set up your plan. Find out how to invite someone.
The overall cost depends on how many SIMs you have in the plan. The cost for each one gets lower the more you add. So the first SIM is the same rental price as a single SIM only plan, the second has a lower rental price, the third lower still and so on. Offers may vary.
Once we have confirmed your claim your card will be dispatched. This could take up to 45 days to arrive.
The legal stuff
*Family SIM saving compared to the same number of individual SIMs bought on our standard SIM Only plan.
**Temporarily available due to technical difficulties. Will be removed as soon as possible.
ΔWe may change any prices and terms during your contract. If this affects you, we'll tell you about important changes in advance, and you'll be able to end your contract without any fees.
See our tariff guide for details of all our standard prices.
The BT Reward Card is issued by Blackhawk Network (UK) Ltd., pursuant to license by Mastercard International Incorporated.