Got this issue too!
I was going to go through the warranty as I assumed the camera module had gone faulty.
If I switch to 2x zoom, the picture flickers and the buzzing camera vibrates the whole device.
If I shake it while it's doing it, it'll stop and I can use the camera normally.
Just follow the steps in the accepted solution and we'll be happy to help.
Cole, I'm having the exact same issue. I just sent you my phone info? Can you please help? It is really disappointing. I have to use my wife's iphone during our recent vacation.