Default Droid Maxx Camera Doesn't Detect

Hey everyone Got Droid Maxx 32GB Its brand new but when I got the device in India the Rear Camera doesn't shows up only front camera works there is.no way to switch Rear CAmera I'm installed Google Camera It's saying Your device doesn't have Rear Camera Please try again is it Camera issue Or Main board issue Please suggest me.as I live in India I can't send back to USA fr repair

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