Mobile FSD works entirely off your phone's live location, so location services must be turned ON before you start. If prompted, allow LP Diary to access your location — without this the tool cannot function.
Select your route
Pick your route from the dropdown, or just start typing the route name — matching routes will appear as suggestions. Select the correct one to continue.
View upcoming signals
Once a route is selected, the next 5 upcoming signals are shown along with their live distance from your current GPS position — updating as you move.
Check your speed
A live speedometer is shown at the bottom-right corner of the screen, calculated from your GPS movement.
Note: Signal distance and speed readings depend entirely on your device's GPS accuracy and signal catching range. Readings may vary slightly in tunnels, deep cuttings, or areas with weak GPS reception.