Is your mobile IMEI number is valid? How to know valid IMEI? This tutorial will teach you how can you know your mobile IMEI number.

International Mobile Equipment Identity, or IMEI number is a unique number alloted to Mobile Phones used for many reasons, to identify from GSM, WCDMA And some Satellite phones, It is a unique number logged inside the battery compartment of the phone and can be used to track and search for lost or stolen phones.

Before a company launces the mobile they have to get it alloted from the board of telecomunications. Currently the IMEIs are allocated by BABT (British Approvals Board of Telecommunications )



Know the IMEI number in your phone by pressing *#06# (That’s star hash zero six hash) on your phone or by looking inside the battery compartment.

IMEI information on BlackBerry and on new Sony Ericsson devices can also be found by going to options, then status.

On Android the IMEI information can be found under the ‘About Phone’ menu option in the settings menu.

On iOS devices, the IMEI can be found under General: About in the Settings app.

It is used to track down and Block the lost or stolen phones. Every phones IMEI is Logged in to the Database of EIR (Equipment Identity Register) and is searched in it for Entries for Whitelist, Greylist and Blacklist of that particular IMEI.

Network Operators have the authority to Blacklist the Number and also to know the Current location by using Global Positioning System (G.P.S) but the use it only on case of special investigations.

And Also wiretapping can also be done by the use of IMEI of particular number triggered by the Network Operators.

Blacklist of stolen devices

When mobile is stolen or lost the owner can contact their Network operator with a request that it should be blocked. If the Network operator have an Equipment Identity Register (EIR), it then will put the device IMEI into it to look in the database , and can also communicate to the Central Equipment Identity Register (CEIR) which has the authority to blacklist the device in all other operator that use the CEIR.

With this blacklisting in place the device becomes unusable on any Network that uses the CEIR, making theft of mobile equipment a useless business proposition. Now the Mobile would be nothing then a Paper weight or a Mp3 player or anything but a Communitation Device.