PositioningA yellow circle indicates that the device has found asatellite, and a green circle that the device is receivingsignal from the satellite. When all the circles are green, thedevice receives enough data from the satellites tocalculate the coordinates of your current location.To check how many satellites your device has found, andwhether your device is receiving satellite signals from thesatellites, select Options > Map options > Satellite info.If your device has found satellites, a bar for each satelliteis shown in the satellite info view. The longer the bar, thestronger the satellite signal. When your device hasreceived enough data from the satellite signal to calculatethe coordinates of your location, the bar turns black.Initially your device must receive signals from at least foursatellites to be able to calculate the coordinates of yourlocation. When the initial calculation has been made, itmay be possible to continue calculating the coordinates ofyour location with three satellites. However, the accuracyFor more information on data transmission charges,contact your service provider.You can view the amount of transferred data from the datacounter (kB) shown on the display. The counter shows theamount of network traffic when you browse maps, createroutes, or search for locations online.To check whether the maps that are downloaded to yourdevice have been updated on the map server, selectOptions > Settings > Network > Options > Check formap updates.To prevent the device from automatically downloadingmaps through the internet, for example, when you areoutside your home cellular network, select Options >Settings > Network > Use network > Off.To define how much space you want to use on acompatible memory card for saving maps data or voiceguidance files, select Options > Settings > Network >Max. memory card use (%). This option is available only