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What is IMEI?
The IMEI (International Mobile Equipment Identity) is a unique number to identify GSM, WCDMA, and iDEN mobile phones, as well as some satellite phones.
The IMEI is only used for identifying the device and has no permanent or semi-permanent relation to the subscriber. Number is used by the GSM network to identify valid devices and therefore can be used for stopping a stolen phone from accessing the network in that country.
How to check IMEI?
The IMEI can be displayed on the screen of the phone by entering *#06# into the keypad on most phones. It can also be printed inside the battery compartment of the phone.
How to check warranty & unlock your iPhone.
How to check & verify iPhone warranty.
The Structure of an IMEI Number
IMEI numbers either come in a 17 digit or 15 digit sequences of numbers. The IMEI format currently utilized is AA-BBBBBB-CCCCCC-D:
AA: These two digits are for the Reporting Body Identifier, indicating the GSMA approved group that allocated the TAC (Type Allocation Code).
BBBBBB: The remainder of the TAC (FAC)
CCCCCC: Serial sequence of the Model (SNR)
D: Luhn check digit of the entire model or 0 (This is an algorithm that validates the ID number) (CD)
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