The IMEI number, or International Mobile Equipment Identity, is a unique 15-digit serial number assigned to every mobile phone and device worldwide. It serves as a distinct identifier for each device, much like a fingerprint

. The IMEI number is stored in a database called the Equipment Identity Register (EIR), which mobile networks use to verify that a device is authorized to access their services. This system helps in identifying valid devices and can block stolen or lost phones from connecting to the network, even if the SIM card is changed

. The IMEI number reveals details about the phone, such as its brand, model, and year of release, without needing physical access to the device. It is used by carriers, manufacturers, law enforcement, and insurance companies for device identification, tracking, and security purposes

. You can find your IMEI number by dialing *#06# on your phone, checking the device settings, looking under the battery or on the device's packaging, or in the case of some phones, printed on the back or SIM tray

. In summary, the IMEI number is a critical identifier that helps manage mobile device security, track lost or stolen phones, and ensure network integrity.