What are IMEI and ESN numbers?
IMEI (International Mobile Equipment Identity) is a unique 15-digit code used to identify an individual GSM mobile telephone to a mobile network. They can be found under the battery. It can also be displayed on most phones by dialing *#06#. ESN is the electronic serial number that serves a similar purpose as IMEI to identify an unique AMPS phone. Each phone sent to us should have a valid IMEI or ESN number.
