I have an iphone 3gs. Recently when i receive a new text message or voice mail the phone vibrates instead of making the "new text message" tone "Tri-tone" that i have selected in the settings option. When i type a text message the phone does not make the keyboard click sound anymore even when i have the option turned on in the phone settings. some on my apps "Terminator salvation" their is no sound playing through the speaker. i only get sound if i plug in headphones. also when i connect my iphone to my pc and no longer get a tone, the phone just vibrates -.- anyone else having this problem ???