Voice command is mostly available through the Google Now/Search function. What are you trying to have the phone do through voice commands?
I'm most definitely NOT a VZW employee. If a post answered your question, please mark it as the answer.
Sorry I have a Samsung Inspire !! not a smart phone. I was curious about the Fake call feature I saw listed on the codes. I found it on my phone and got a message there that said I have to use Voice Command to open it up. Just inquisitive regarding this feature.