SIM SAFETY
Lost phone or damaged SIM: blocking and replacement
Block a lost connection, request an authorized replacement and protect accounts linked to the missing or lost phone.
On this page
If your phone is lost or stolen, contact the operator promptly about blocking the line. Ask for an authorized replacement process for your own connection. A replacement SIM does not remotely erase the lost phone.
Secure the line
Use a trusted second phone or the operator’s official online support. Explain whether the phone was lost, stolen or simply stopped reading the SIM. Record the complaint or block reference.
Protect your accounts
Use the device maker’s recovery tools where available. Review important account sessions from a trusted device. If there is evidence of financial misuse, contact the relevant provider immediately.
Request a replacement
Confirm the documents, identity checks, fee and service-centre requirements before visiting. Ask whether the old card becomes unusable when the replacement activates. Keep the receipt and test incoming calls and messages.
If the registered holder is someone else
Ask about the proper ownership procedure. Do not use another person’s identity information to impersonate them. Read SIM ownership transfer.
Find the device
See lost-phone tracking for Google and Apple recovery routes.
References and next steps
General preparation guidance is distinguished from operator-specific requirements. Confirm the requirements for your own transaction with the responsible provider.