Q: iPhone 6 Camera not working

iPhone 6 Space Grey 128GB

Arrival Date: October 3rd 2014

Purchase through Apple Store Online

It was working at at unboxing. The Camera works just fine.

However, I upgated my iOS to the most recent version iOS 8.0.2.

As of Today, the second time i pull up my camera it is not working but showing up a black screen.

Failed to take any photos nor videos.

In the app of Instagram, it says something like Camera failed to launch, please try again.

Anyone has similar experience and solution to share?