Does Telenav use a lot of data usage? I know that on the BlackBerry maps, as you go from one place to another, it downloads new maps. What about data usage on Telenav? I am in Canada and we don't have unlimited data here.

Wirelessly posted (8700g: BlackBerry8800/4.2.1 Profile/MIDP-2.0 Configuration/CLDC-1.1 VendorID/102)

You can be certain it is using a fair amount of data. There is no way to monitor the amouint except to inquire of your carrier.