Apple India — camera problem ios 11

Address:	Aurangabad, Maharashtra, 431001
Website:	E

20 days before i updated ios 11 in my apple iphone 6 so after updating i am facing problem of camera my back camera is no opening black screen is coming n front camera also not working
Sometimes both camera working fine and again i faces the same problem i showed my mobile to many people but they can’t fix it someone is telling to change camera someone is telling software problems or hardware problem some people suggested me to go to apple service center so i thought u can do for me so pls help me to fix the issue