No. Micromax Bharat 4 does not have the hybrid sim slots. It has 2 dedicated sim slots and 1 dedicated MicroSD card slot.
Yes, Micromax Bharat 4 does have a dedicted MicroSD card slot.
Yes, you can use the Jio sim card in Micromax Bharat 4.
Micromax Bharat 4 comes with Android Nougat 7.0 OS.
Yes, you can use it. But at any given time, one sim will work on 4G network and another will work in 3G network.
Good Phone
East or west, Micromax is the best.