Your phone displays your location using GPS, A-GPS, WLAN, or cellular positioning.
The Global Positioning System (GPS) is a satellite-based navigation system used for calculating your location. Assisted GPS (A-GPS) is a network service that sends you GPS data, improving the speed of the positioning. In addition, other enhancements to GPS may be used to improve and speed up the positioning. These may require transferring small amounts of data over the cellular network.
Wireless local area network (WLAN) positioning improves position accuracy when GPS signals are not available, especially when you are indoors or between tall buildings.
With cellular positioning, the position is determined through the cellular network antenna your phone is currently connected to.
To save on data costs, you can deactivate A-GPS in your phone positioning settings, but calculating your location may take much longer.
You can deactivate WLAN in your phone internet connection settings.
Depending on the available positioning methods, the accuracy of positioning may vary from a few metres to several kilometres.