Don't panic. Contact our BT One Phone helpdesk right away to report it. We're open 24/7. The number to use is 0345 154 8844 (or 8844 from a BT One Phone) and select the option for lost, stolen or replacement SIMs.
If your standard BT mobile phone has been lost, damaged, or stolen you need to contact us immediately.
Important: BT One Phone is no longer available to new customers. If you're an existing BT One Phone customer, you can continue using the service while we support you through its closure. If you're looking for a new communications solution, explore our BT Business Mobile and BT Digital Voice for Business options.