What is an MEID? A mobile equipment identifier, or MEID, is a unique number that identifies a wireless handset. This system replaced the electronic serial number (ESN) system in 2006.
You can use MEID Convertor to convert between MEID and ESN, and to view both decimal and hexadecimal formats. This can help you when trying to activate your phone with a carrier that requires your phone's unique identifier in a specific format.