You can use Truthspy to track a cell phones location by GPS.
With the use of the Truthspy cell phone tracking app you can track the location of the cell phone by number through GPS and it does not matter which country the cell phone belongs to.
Truthspy also has its own database which stores the specific location, address, city, and country from any number of A cell phone.
To use and access the features, you do not require downloading any additional application, simply you have to add a mobile number of the particular device in the search area and the program will do rest of the process.
Truthspy cell phone tracking is very useful because it is available for both the iOS and android mobile system and furthermore it is also applicable to Windows and Mac systems.
There's also many other apps besides Truthspy to track a cell phones location but Truthspy is a good one.
You can also install apps on your own cell phone and family members cell phones by installing apps on those phones before the cell phone gets lost or before you need to track the persons cell phone.