What's a BT Mobile Family SIM?

A Family SIM lets you add extra SIMs to your existing BT Mobile plan.

How it works

With a BT Mobile Family SIM, add up to five SIMs and share your plan with family or friends. The more you add, the more you save.

One single plan

Each SIM comes with its own allowance, equal to yours. And because it's all on one plan and one bill, it's easy to manage

Total flexibility for the whole family

Your plan comes with a 12-month contract but all your Family SIMs are on flexible 30-day contracts. As long as you have at least one SIM on your account, you can add or remove SIMs without paying a cancellation charge.

Control your mobile

Manage what your family spends or give them control of their own SIM. You are the main account holder and are responsible for all charges.

How do I order a Family SIM?

New customers are no longer able to order Family SIMs.

If you've already got BT Mobile and want to add another SIM, go to My BT.

If you know someone who already has a BT Mobile SIM, you can invite them into your plan. You're then responsible for paying their bill.

Find out how to invite someone.

How much does it cost?

The overall cost depends on how many Family SIMs you have in the plan. The cost for each one gets lower the more you add.

The first Family SIM is the same price as our 15GB, 6GB and 3GB SIM-Only plan; the second has a lower rental price and so on.

For complete pricing details, please review the BT Tariff Guide.

How do I keep track of things?

To keep track of your usage, allowances, and settings, go to bt.com/mymobile.

What's the contract length?

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 have a 30-day rolling contract. If the plan ends up with just one SIM left, it will pick up the remaining 12 months of the minimum term.

Find out about our 30-day money-back guarantee here.

What if I already have a BT Mobile phone plan?

If you already have a phone plan, you can add extra Family SIMs. Each SIM will have a lower cost than the previous one. You can upgrade or downgrade your plan at any time, but you can only do so once.

BT Family SIM plans - 5G

BT Family SIM plans 4G

For details on costs and plan details, please review the BT Tariff Guide.