ESN(pronounced as separate letters) Short for electronic serial number, a unique identification number that every cellular phone has and is assigned by the specific manufacturer. When a cellular call is placed on a mobile telephone, the ESN is transmitted to a base station, and the number is used to authenticate the validity of the phone in respect to the cellular service the phone is attempting to use. The ESN is embedded within the signal and transmitted each time a cellular call is placed.
In addition to being programmed into the circuitry of the phone's microchip, the ESN typically is found on a label under the cellular phone's battery.
Taking ownership of our own misjudgments or simple forgetfulness takes a healthy amount of humility and some honest self-assessment. Yet sometimes... Read More »Have We Become a World of Addicts?
It's hard to imagine our lives without smartphones. But people who suffer separation anxiety when they don't have their phones nearby may be in... Read More »13 Best Free Android Apps
From secure messaging to document editing, our top free must-have apps have been rated, reviewed and named the best free Android apps of 2015. Read More »
From wacky alarm clocks to lecture hall tools and after class entertainment, these Android apps are a good fit for a student's life and budget. Read More »Network Fundamentals Study Guide
A network is a group of two or more computer systems or devices, linked together to share resources, exchange files and electronic communications.... Read More »Computer Architecture Study Guide
This Webopedia study guide describes the different parts of a computer system and their relations. Read More »
Stay up to date on the latest developments in Internet terminology with a free weekly newsletter from Webopedia. Join to subscribe now.
- Watch Datamation's editor James Maguire moderate roundtable discussions with tech experts from companies such as Accenture, Dell, Blue Jeans Network, Microsoft and more »