Hi My father's iPhone 3GS got problem after he told me he did something with the settings. The phone is not responsive anymore.. I mean something like. When you press anything, it doesn't work. But once you plug the headphone, you can hear the phone talking about what you are pressing. What's the the problem here?

Hey I was wondering, how do we switch from Voice Control mode to normal? My dad told me he did something with the voice control and now the touch screen is not functioning.

Erm I mean its like, no matter what I press(even Menu), and restarting the phone, the touch screen just doesn't work. But when plugged a headphone and press anything on the screen, you can hear it telling you what it is(Like.. Once you press the clock, it tells you the time). Sorry for my bad english, sleepy