My iPhone will not vibrate MORE!!!!!

same problem here

FYI a full restore and reinstallation of iOS5 hasn't brought the vibration back.

just took mine to the Apple Store today, they opened the phone and fixed it, not sure what caused the vibration to stop but they mentioned maybe it was dust...

definitely take it to the apple store, seems like a hardware issue.

Hello,

If it is the iPhone 4, download a free vibrator app (such as iBrate) or switch your phone to vibrate and have someone call you. While your phone is ringing or attempting to vibrate (from the vibrator app) just tap your finger on the back of the phone on the top right (AT&T + Sprint) or the back of the phone on the bottom left (Verizon). This will help loosen a jammed or stuck vibrator and usually fixes the issue. You may have to tap for a few minutes. or more.If this doesn't work after awhile, your vibrator may need to be replaced.

Hope this helps,

Giovanni