Are there still any countries or territories on Earth where the Global Positioning System devices cannot be used?

Answer 1

Any GPS device will work anywhere on Earth. That is, if you have a good

battery in it, it'll accurately show your longitude, latitude, and elevation.

But there may still be a few countries that won't let you bring a GPS into

the country with you.

Answer 2

No, GPS devices can be used worldwide as the system is global and covers the entire Earth. However, in some areas with dense overhead obstructions like urban canyons or thick forests, GPS signals may be weaker or blocked, leading to reduced accuracy.