Not too sure if there was a thread here similar to this one, well the official BB maps that comes with my Blackberry 9900 works perfectly fine (it gives me the route that i want to travel from / to) but there is no Voice navigation turn by turn, can someone here help in how to install a voice navigation, P.S: i prefer using the official BlackBerry maps rather than using a 3rd party Application .. thanks in advance for your help