I can't hear voices out of my iPhone 5, how do I fix that?

Before anyone hammers me, I have been using iPhones since the 3G version. I just got the iPhone 5 and it worked fine, I didn't drop it or anything but there's no sound that shows that you are calling someone or listening to a voicemail. It will work if I put it on speaker or use the headphones… But not by itself.

U r very funny u made me laugh

Your Mouthpieces is broken

Mine has the same issue.