Best Free GPS Map for BlackBerry Q10 in Pakistan

Dear Friends;

I have BlackBerry Q10 cell phone. I am searching for a Best Free GPS Map for my device. I have installed google gps map from BB world but it is not working perfectly in navigation mode. It gives me option to upgrade the map by paying some amount.

Normally in android sets, the navigation of GPS free map works perfectly. You mention your location and the target location and it provides online directions till the destination. Please guide.