Lost & Stolen Device Register
A loss or theft report sticks to the handset, not to whoever is selling it. Run the IMEI while you can still walk away — afterwards the problem is yours.
Dial *#06# on the handset to display its IMEI.
This check runs against a live device database. Create a free account to run it.
Takes a moment, and your results are saved to your account.
What a blacklisting actually does
The blacklist is a shared register of IMEI numbers, kept between mobile networks and the GSMA (Global System for Mobile Communications Association). An owner tells their network the handset has gone, the number goes on the register, and networks reading that register refuse the handset a connection — no calls, no texts, no mobile data, whichever SIM is pushed into it.
The block travels with the hardware, and it crosses borders, because networks share register data between countries. There is no unlocking your way out of it either: a network lock can be lifted by the network that applied it, while a loss report can only be withdrawn by the person who filed it. Resale value goes the same way — a listed IMEI is worth spare parts.
So check the number first, and then read a clean result for what it is: nobody had reported that IMEI at the moment we looked, and nothing more. A theft from this morning may not be on the register yet, and the register says nothing about who owns the phone, whether it is still being paid off, or whether an account is still signed in to it. Check the number, then still ask for the receipt.
Reading the result
Warning: Paying for a listed handset buys hardware you cannot put a working SIM into, and one that is hard to move on afterwards. Run the number while the seller is still standing in front of you.