IPhone 4S front camera broke?

It's been annoying me for a while now and I want it back ahah

Basically I went to take a photo and I turned the camera around to the front one and then it just went black so I restarted my phone and done the multytask and flicked it of the screen and it still done that? So in more detail when I go to my camera and go to turn it around it kind of does a little turn and when it goes to the front camera it goes black then I can't do anything but take photos on the back? What can I do to get it back?

I would call the apple company and see if they can help solve this issue. I have the same exact phone and have never had this problem. It might be a manufacturing error if it just randomly stopped working.