What is a cell phone ESN number?
The electronic serial number, or ESN, is an identification number assigned to cell phones that use CDMA technology. Cell phones transmit their ESN information via radio signal to the wireless network for authentication.LocationTypically used by CDMA carriers including Verizon and Sprint, the 32-digit ESN is printed on a sticker located in the battery compartment, the outside of the box, or on the back of the phone.PurposeWhen you power your phone on, the start-up process transmits your ESN to the network to ensure you are a valid user. Once validated, a signal is sent to your cell phone that allows you to use your phone.IdentificationThe ESN number automatically matches your service account and phone number with cell sites (towers) when you are moving and/or when the phone is powered on.Additional FunctionsThe phone’s activities, including when calls were made and received and from where, can be tracked using the ESN.WarningBeware of fraud if you purchase your phone from anyone other t
