Open Settings and select General > Positioning.

With the Positioning service, the location of your device can be detected and the info can be used by other applications in your device.

For example, Landmarks allows you to save particular locations in your device to make it easier to navigate to them.

To select the positioning method used to detect the location of your device, select Positioning methods and the desired method.

To edit the positioning server in use, open Positioning server. Define the Access point and enter the address of the server.

To define the measurement system and coordinate format, open and select the relevant settings.

The positioning server may be preset for your device by your service provider, and you may not be able to edit its settings.