I wasn't able to find any threads related to this in the S6 forums but I wanted to see if anyone else has this. When I open my camera app, sometimes the camera takes 1-2 seconds to initially focus and during that time it makes a loud buzzing sound. It sounds like a focus motor or something in the camera and the camera output on screen flutters while it focuses. Once it focuses, everything is normal and it doesn't make any more noise to refocus. This also doesn't happen every time I open the camera app, seems mostly random. Has anyone else experienced this? I am already on my 2nd S6 since the first was defective for different reasons and I'm starting to get very disappointed with Samsung quality control.