And to add to what phAnt0m DrAc0N said, the IMEI, International Mobile Station Equipment Identity, number is used by a GSM network to identify valid devices and therefore can be used for stopping a stolen phone from accessing that network. For example, if a mobile phone is stolen, the owner can call his or her network provider and instruct them to "blacklist" the phone using its IMEI number. This renders the phone useless on that network and sometimes other networks too, whether or not the phone's SIM is changed.
The IMEI is only used for identifying the device and so its not possible for there to be a case where you can tweak it..... HACKGH FOR LIFE
Last edited by chinesta10 on Fri May 01, 2015 7:19 am; edited 1 time in total (Reason for editing : Typographical error)