Back facing camera on my iPhone 4S is having problems?

When I go to my camera app and try to use my back camera, I will click the button to take a picture and the app will completely close out. When I do this with my front camera it works fine. What should I do? I can't hold down my home and power button because my power button is broken. Any other suggestions? Should I take it in? Will they give me a new phone?

Go to the apple store and see if they can do anything to the phone to help

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