Webopedia on Google+Webopedia on TwitterWebopedia on FacebookTech Bytes Blog
Main » TERM » I »

IMEI- International Mobile Equipment Identity

IMEI is short for International Mobile Equipment Identity and is a unique number given to every single mobile phone, typically found behind the battery.

IMEI numbers of cellular phones connected to a GSM network are stored in a database (EIR - Equipment Identity Register) containing all valid mobile phone equipment.

When a phone is reported stolen or is not type approved, the number is marked invalid.

The number consists of four groups that looks this:

nnnnnn--nn-nnnnnn-n

The first set of numbers is the type approval code (TAC). The first two digits represent the country code. The rest make up the final assembly code. The second group of numbers identifies the manufacturer:

01 and 02 = AEG

07 and 40 = Motorola

10 and 20 = Nokia

41and 44 = Siemens

51= Sony, Siemens, Ericsson

The third set is the serial number and the last single digit is an additional number (usually 0).

 







TECH RESOURCES FROM OUR PARTNERS
DID YOU KNOW?
It's Happening Now: Perceptual Computing is Real

Perceptual computing is the ability for a computer to recognize what is going on around it. More specifically, the computer can perceive the... Read More »

Apple Pay Promises to Strengthen Payment Security

Experts believe that Apple Pay and other competitive payment systems will be far more secure than cards, even cards equipped with EMV chips. Read More »

The Great Data Storage Debate: Is Tape Dead?

Tape clearly is on the decline. But remember, legacy systems can hang for a shockingly long time. Read More »

QUICK REFERENCE
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 »

Webopedia Polls

The trend for the past two years has been for shoppers to spend more online during the holiday season. How do you typically shop for holiday... Read More »