How do I know which lens is cracked on my Samsung note 4?

[AC Question]

When I go to take a picture I can see the cracks across the screen. When I switch it to selfie it doesn't show cracks. Cant see anything by looking on the back? Help!! Where do I get the part also? Thanks-

 

[VW Maverick]

Welcome.
It is definitely the rear camera.
Take it to a Corporate repair location for you particular carrier and have them check it out. It may be repairable.

Mav.