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scozor
Every mobile phone, GSM modem or device with a built-in phone / modem has a unique 15 digit IMEI number. Based on this number, you can check some information about the device, eg brand or model.
Dial *#06# to see your device IMEI
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.
IMEI in iPhone & iPad
Go to phone settings
Then select the "General"
In the "About" field you will find your iPhone IMEI
In iPhone 3G, 3GS, 4 and 4s you can check the IMEI number on SIM card tray. In the case of CDMA network there is also a MEID number.
In iPhone 5, 5c and 5s IMEI number is engraved on the back cover. If you need to check MEID number it will be the same number as IMEI without the last digit.
Check MEID number in iPad
Go to iPad Settings
Then select the "General"
In the "About" field you will find your 14-digit iPad MEID number
In the case of iPhone and iPad IMEI/MEID number can be found in iTunes (device must be connected to a computer)
IMEI in Motorola Iden Phones
On the dialing screen, press [#][*][menu][right arrow] and confirm.
If your phone has a SIM card, scroll down to "IMEI / SIM ID" section and press Enter. Here you see 14-digit phone's IMEI. To get the full 15-digit number you must added at the end of the digit 0.
If your phone does not have a SIM card should continue pressing the [arrow right] key until you see "IMEI [0]" The screen will display the first 7 digits to see another 7 scroll down. To get the full 15-digit number you must added at the end of the digit 0.
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)
IMEI calculator
The last number of the IMEI is a check digit. The Check Digit is calculated according to Luhn formula.
The Check Digit is a function of all other digits in the IMEI. The purpose of the Check Digit is to help guard against the possibility of incorrect entries to the CEIR and EIR equipment.
The check digit is validated in three steps:
Starting from the right, double a digit every two digits (e.g., 5 → 10).
Sum the digits (e.g., 10 → 1+0).
Check if the sum is divisible by 10.
Conversely, one can calculate the IMEI by choosing the check digit that would give a sum divisible by 10.
For example:
IMEI: 35145120840121
(5x2, 4x2, 1x2, 0x2, 4x2, 1x2, 1x2) = (10, 8, 2, 0, 8, 2, 2)
(1+0+8+2+0+8+2+2) + (3+1+5+2+8+0+2 ) = 44
Luhn Digit : 6
IMEI: 351451-20-840121-6
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