Every Mobile Device comes with a Unique IMEI Identifier Number. IMEI stands for International Mobile Equipment Identity. This Number acts as a unique Identifier for Mobiles as every mobile has a Unique IMEI. This can be retrieved for Dial Pad typing *#06# or go to Settings -> About in Android.
IMEI has various purpose Like Tracking your Mobile when lost or Stolen, Often Police asked the IMEI and user had no idea as they had already lost the IMEI. Here is how to get the IMEI NUMBER of your Stolen or Lost Android Phone.