Thanks for your help; Problem solved!
Is it that you just can't hear the responses, or there are no responses (nothing even appears on the screen, beyond perhaps what Siri hears from you)?
Thanks for the reply I figured out the problem on my own! In settings, I forgot that that I changed my ringtone settings to ajust with the volume keys. Since being in class, I turned the volume all the way down (in addition to being on vibrate) and forgot to turn it back up (I just turned vibrate off

)! By turning the volume buttons back up, I was able to hear Siri again!

Lol I am so stupid!
At least on the bright side, my iPhone 4S is fine still running iOS 6

and, I know how to fix the problem when it happens again.
Thanks for the help and, hope u have a great night!
