What Is the IMEI and What Is It for?

IMEI number You can even go as far as saying that it is your 1: Reasons to change IMEI

One for each SIM , it'll still show you the number even if the slot's not

imei slot meaning IMEI is a 15 digit number assigned to every cellular device for each of its SIM slots IMEI 1 and IMEI 2: Why my phone has two IMEI numbers?

imei slot 1 slot 2 Card Slot 1 nano SIM + 1 nano SIM micro SD More Standby Mode Dual SIM Dual Front f , Rear f + f More Flash Rear