An Electronic Serial Number (ESN) is a unique identifier assigned to every mobile phone. It is used by carriers to identify the device and track its usage. A clean ESN indicates that the phone has not been reported lost, stolen, or involved in any fraudulent activity. Checking for a clean ESN is important before purchasing a used phone to ensure that it is not associated with any negative history.
There are several ways to check for a clean ESN. One way is to contact the carrier directly and provide them with the phone’s ESN. The carrier will be able to tell you if the ESN is clean or not. Another way to check for a clean ESN is to use a third-party service. There are a number of websites and companies that offer ESN checks for a small fee.