Here are the 4-methods to change IMEI on any Android device. This methods will work most of the devices. If you lost your IMEI number, then you will loose Network signal. You may facing this issue while rooting your device or Upgrading OS or Installing Custom ROMs.  Below guide will help you to fix IMEI or Invalid IMEI or even you change the IMEI number temporarily. These methods are working with or without Root Android device.
hi,
lost my iphone4 in hyderabad,India,launched a complaint in PS heard and we can track our lost phone imei no but heard even iphone 4 imei number can be chaged is it possible ?
No, you can't. Every iPhone 4 has a different IMEI number and it is the only thing that distinguishes one iPhone 4 from another.
No, iPhone imei can't change, it's unique. T
no
If you never enabled Find My Iphone and want to try to track your iphone using IMEI number this website can do that: iphonetrace.
Yes it does. The IMEI and SIM are totally different. The IMEI number is hardcoded into the handset and cannot be changed for a specific handset. But the SIM can be changed.
Apple N berry annouced about the permenent IMEI unlock method for the new AT&T iPhone. I found about the subject from the google. May be it help your or not. Check the related link for it
Go into phone mode on your iPhone and bring up the dial pad and enter *#06# You're imei number will then be displayed on screen.
The IMEI (International Mobile Equipment Identity) number is specific to the handset. The mobile number is associated with the SIM card. If you swap a different SIM card into the mobile phone, it will have a different mobile number but the same IMEI number. The mobile company will have a record of the IMEI of the handset that used a particular mobile number for a particular call, and your mobile provider has a record of the IMEI of any phone you purchased from them, but you cannot in general trace the IMEI by the mobile number.
No.
The Pin and IMEI numbers are hardcoded into the Blackberry device (much like MAC addresses) and cannot be changed or "reset".
The IMEI code will be useless if a serial number is not known. If a serial number is known, then a call to apple support is warranted, and they can set the direction to begin locating the device.
No -- an iPod Touch does not have an IMEI number.
only by IMEI