Enable Voice Dialing while screen is locked [webOS 2.1] 7

This tip is only for devices running webOS 2.1 and higher   

The new Voice Dial app in webOS 2.1 allows you to dial a contact or number just by talking into your phone. While there are a number of ways to activate Voice Dial while your phone is turned on, you can also quickly access Voice Dialing even while your phone is locked or the screen is turned off.  First, you need to enable this functionality by going to the "Screen & Lock" app and scrolling all the way to the bottom. You will see a "VOICE DIALING" section at the bottom with a single option to "Enabled When Locked". If this is set to on, then you will be able to access Voice Dial by press-and-holding the Volume Up button at any time, even if the screen is turned off or the phone is locked.

It is important to realize that this will work, even if you have a PIN or Password enabled.  Therefore, allowing Voice Dialing when locked will allow anyone to access the phone app via Voice Dialing without having to enter a PIN/password.