Yes, Vivo Y83 does have the 2.5D Corning Gorilla Glass display.
Yes, Vivo Y83 does have the face unlock.
Yes, Vivo Y83 does have the AI Face Beauty which detects gender, age, skin tone, skin texture and lighting environment and applies the necessary corrections on your selfies. You also have the option to in-active it.
Vivo Y83 comes with 5V / 2A charger and it helps the phone to charge quickly.