Cellular Communications and the 3G modem collect data location from cellular towers around Australia with 98% of Australia covered at 850/900/2100 Mhz. 

If the unit goes off the cellular network the position will be stored and uploaded once a signal is received. It will record the last known location of the device.

How often does it update?

On hire - You will see a green active dot with last known location - updated every 60 seconds.

At home -  You will see a red inactive dot with parked location - updated every 5 minutes when stationary.