SIM SAFETY
Why a pre-activated second-hand SIM is risky
Check the authorised registration route before using a SIM obtained from a private seller or another person.
On this page
A working SIM does not prove it is registered to you. If you buy a pre-activated line from a private seller, you may be unable to replace, recover or close it through the proper process.
Before accepting a connection
Ask the operator whether ownership can be transferred and what both parties must do. Do not rely on a seller's screenshot or photocopied identity document. Read ownership transfer guidance.
Protect personal accounts
Avoid attaching important recovery accounts to a number whose subscriber record you cannot resolve. The previous holder may still have services associated with it, and you should not access those accounts.
If you already use the SIM
Contact the operator, explain the situation and request the authorised route. Keep any sale record without publishing the seller's private information. Do not impersonate the registered holder.
Safer purchase
Use an authorised outlet, read the registration details and keep the receipt. Check your own records after the transaction.
References and next steps
General preparation guidance is distinguished from operator-specific requirements. Confirm the requirements for your own transaction with the responsible provider.