My IPhone will not make any sound, at all?

My phone won't ring, won't make sound for notifications, it won't play music out loud, it is like I blew out my speaker. I have not had my phone by water recently, and it worked fine the other day, it just randomly stopped working.

Take it to the store where you bought it from and get it repaired

My iPhone 4 does this. Its an ongoing problem that Apple has never seemed to fix. Just make sure the phone is not on slient by using the slider on the left, then restart the phone.

If that doesn't work, backup everything on your iPhone and factory reset it.