The MIN (Mobile Identification Number) is a number that uniquely identifies a mobile telephone subscriber.
MINs are 34-bits in length. The first 10 bits are sometimes known as MIN2, while the last 24 bits are referred to as MIN1. Together they are simply known as the MIN.
In the United States, the MIN is derived from the 10 digital decimal telephone number assigned to the handset. For the telephone number (303)866-1010, the area code (“303″) becomes the 10 bit MIN2 and the local portion of the telephone number (“866-1010″) becomes the 24 bit MIN1.
Internationally, MINs are calculated in a different fashion. The three digit mobile carrier identification number becomes MIN2 and the local portion of the telephone number becomes MIN1. IFAST, the International Forum on ANSI-41 Standards Technology, assigns the mobile carrier identification numbers. A MIN in this format is known as an IRM (International Roaming MIN).
Unlike the IMEI, the MIN is not an attribute of the physical phone. The MIN is stored in a database that the cellular provider manages and can be changed at any time.

what is min & how it differ from MDN is,t stored in hlr or in a subscriber handset
Nitin:
The MIN is not stored in the handset or in a SIM card. It is stored in a database managed by the mobile telephone company.
If the MIN is: (Mobile Identification Number) is simply the phone number of the cellular telephone……Then why do I have two different numbers? Can anyone explain this? My cellular number and the MIN are similar, both in Alabama and the number that is “NOT” mine is an active cellular number. How can this happen? Any advice would be much appreciated. Thanks
Local Number Portability made MINs more confusing than before.
Where are you seeing two MINs? Are you sure one isn’t a MDN or MSID?
It is in the Status of my settings: Phone number, signal, etc..
It has my cell number and below it there is “MIN” with another number. I sent a text to it and it went through but no reply. I did a simple test and sent a text to MY number and it come back to me. I’ve been a victim of cell hacking for about two years and I am sure this has something to do with it. Lesson learned: Do Not connect your phone with Facebook. I figure when it is time to upgrade I will change my number at the same time as my upgrqade and maybe this will solve it. Facebook can kiss it! lol
Come on back if you have a reply to this. Thanks! Jen