Originally Posted by mtahirmunir
The Global Positioning System (GPS) provides reliable positioning, navigation, and timing services to worldwide users on a continuous basis in all weather, day and night, anywhere on or near the Earth.
Yes but not all BB GPS apps (what the OP was asking about) work in all countries.
Originally Posted by Dubdub
IMHO, you will be better off if you buy a dedicated GPS unit and not rely on the BB.
Anyparticular units you'd recommend for one traveling to the areas the OP mentioned? IIRC not every standalone unit comes with maps outside the US.