Where to find IMEI number in Android

I doubt the SN will matter, as long as your IMEI is intact Do you still have the original packaging for the phone? Also, does that phone have

“There have been instances where subscribers who own handsets with dual SIMs have registered one IMEI number against the slot they use

imei slot 1 or 2 FREE Downloads: 1 - Mobile Broadband and 2

imei slot 1 First IMEI No is for First Slot and Second No is for Second Slot Second one:A phone with dual sim cards will have 2 imei numbers This is so