Google Maps is installed and navigation works with turn by turn on screen and gps is tracking but, there is no voice command. Anyone know if the voice commands can be turned on in google maps/navigation and if so, what am I doing wrong? For what it's worth, in "settings", "speach synthesis", the menu option to install voice data is not lighted/available. Dont know if this means I have already installed or if it is just not available to install. This feature works on my droid and I love it, I hope this is just a glitch you guys can help me correct and not a verizon manuver to force use of vz navigator.