My new iPhone 5 Lifeproof case makes loud vibrating sound?

My new Lifeproof case for my iPhone 5 came in yesterday, and I put it on and initially had no problems with the sound. Today, however, it started making an EXTREMELY annoying buzzing sound whenever anything plays on the speakers. It seems like the phone is vibrating against the case and that is what is making this noise, but I can't figure out how to get it to stop. I tried taking out the phone and then placing it back in the case, but the problem still persists. Has anyone had a problem like this with a Lifeproof case before or have any idea what I can do to get it to stop?

I got mine yesterday, too and have the same problem. I hope someone posts a response. It's so annoying.

Same thing to mine so annoying

I called lifeproof and they replaced my case bc it was "defective" and the new case is doing the exact same thing!

Mine buzzes and it makes me think I'm getting another call when I'm talking on my Iphone. So annoying. I'm returning mine.

No one has a answer for this at all?

I put a piece of folded paper on the back of the phone in the case. Problem solved.

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