When your phone has two IMEI numbers?

Why does my phone have two IMEI number and I have one SIM card? imei slot 1 slot 2 A mobile phone has one IMEI number per SIM slot, so if you have a dual SIM phone, it will have two IMEI numbers: IMEI 1 for the first SIM imei slot 1 imei slot 2 Card Slot 2 Additional Information Country of Origin India More Name and Address of the Manufacturer vivo Mobile India Private Limited TEC-1, TEC-2

imei slot 1 and 2 1 2 3 4 5 6 7 0 Slot number 5 Base station transmit Corresponding receive frome 6 7 01 2 3 4 5 ' M ' in IMEI , number stands for mobile-