I know that voice dialing is a very convenient option gmuga! You should be able to access and confirm the command by just speaking into the device. The initial activation of voice dialing however; will require you to press the key or icon on the screen. I have included the steps below for your reference.
From the main screen, touch applications tab
Touch Voice command
Then Say one of the options
I trust this information was helpful.
Follow Us on Twitter@VZWSupport