My phone used to vibrate on normal and vibrate on incoming notifications. I do use Handcent SMS and GMail. I hear the audible notification but no vibrate. I have checked the settings within GMail and Handcent. I have the correct settings to have it vibrate always. But no vibrate. It does vibrate in other programs, like when I turn the volume down to vibrate settings, it vibrates. I have tried rebooting the phone...nothing. Anyone?
