IMEI blacklisting is a security measure used by carriers to prevent stolen phones from being used on their networks.
How It Works:
When a phone is reported stolen, the carrier adds its IMEI to a blacklist. This prevents the device from connecting to cellular networks, making it essentially useless for calls and mobile data.
Regional Differences:
Blacklists are typically regional. A phone blacklisted in the US might still work in other countries, though international cooperation is increasing.
Before Buying Used:
Always check the IMEI before purchasing a used device to ensure it is not blacklisted or reported stolen.