Help IMEI is 0 Can it be recovered?

[Tony:D]

I Google often and rarely post but I cannot find a way to recover the IMEI for this phone. I was told it was the Galaxy Legend, but I believe Stellar is interchangeable. It reads 0 in my android settings, literally never used either.

 

[Rukbat]

It's on the label under the battery. It was also on the box the phone came in, if you still have that. It's also in your carrier's records (or the records of whatever company sold you the phone.).

 

[Tony:D]

I could swear I checked behind the battery.. I'll take a second look when I can. It's because I had given it to a cousin of mine, but she could not activate it. Originally bought it off a friend. Also, there was no box when I bought it.
If I do find the original IMEI, would I be able to change the 0? I've had my fair share of rooting, if that's what may be needed to change it back.