My microphone doesn't work in iOS 7 Since the iOS 7 update, when I receive calls, the person on the other cannot hear me, although I can still hear them.  Also, when I try to give Siri a command, Siri cannot hear me.  Has anyone else had that problem too?
Once the alert is answered it wont pop up again. You have to go to: Settings -> Privacy -> Microphone Then check the state of your app.