No. Vivo Y95 does have a dual sim card slot and a dedicated memory card slot. You can use 2 4G sim cards and a MicroSD card at the same time.
Yes, Vivo Y95 does support face unlock. It also has a fingerprint scanner.
No. Vivo Y95 does not have the front camera flash but it does have the display screen flash.
No. Vivo Y95 comes with MicroUSB port.