Xiaomi Redmi 2 - Dual SIM doesn't work

1, 2, 3, 5, 7, 8, 20, 28, 38, 40, 41 5G bands, 1, 3, 5, 7, 8, 20, 28, 38, 40 Card slot, microSDXC Internal, 64GB 4GB RAM, 128GB 4GB

To answer your question, since slot 1 on your phone is already occupied, the eSIM will be activated in slot 2 But it could be the other way

imei slot 2 IMEI 1 Each SIM slot has an IMEI assigned for identification As your device is dual-SIM, it has two SIM-slots and therefore two IMEI numbers

imei slot 1 Tap Yes to enable Dual SIM mode; Go to About phone in the settings app and find IMEI Close