Which best describes IMEI?

A hardware piece that controls network connectivity

A unique identifier for a mobile phone

A unique identifier for a wireless subscriber

A unique identifier on a SIM card

A unique identifier for a mobile phone

Explanation:

There are different codes and tracking number assigned to different devices such as laptop, mobiles and other devices. The purpose of this task is to make sure the security of device in all aspects. The tracking number that is used to track mobile phone is named as IMEI that stands for International Mobile Equipment Identity.

IMEI is the the unique identity of mobile phone device that consists of 15 digits. It is the unique number that is assigned to phones.