Hi Imbaad,
welcome to the Apple (user-to-user) Community.
Re: Camera is not working properly
Apple support have an article online (link below) that may help:
ie: What to do if the camera screen is black, or:
If the camera or flash on your iPhone, iPad, or iPod touch isn't working
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If needed:
Apple has a web- page with info. about Apple care coverage,
AppleCare Products - Apple
You might want to check your warranty / support coverage:
Find the serial number or IMEI on your iPhone, iPad, or iPod touch
You can enter the serial number on this webpage:
Check Your Service and Support Coverage - Apple Support
(If the serial number generates error message ... iPhone may not be completely genuine.)
One stop for technical support:
Apple hardware service, and software support.
Call Apple Support at 1-800-APLCARE (or use the app)
AppleCare Products - Apple
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Else:
Product Service and Repair Information - Official Apple Support
All the best :-)