Once Mobile Driver is Protacon Technologies Once product unloading time reservation mobile application, which fuel driver's can use to make unloading and pre-load time reservations. Features - Unload and pre-load time reservations.- Load history view.- Active reservation view.- Map view with National Land Survey map layer materials. Android versiot - Supported from Android os 4.2 and up. 4.2 is knows as API17 or Jelly Bean MR1.- If you are using older Android version, go look for system updates from your device settings. Needed permissions - Device storage (Photo features)- GPS location (Mobile scaling features)- Camera (Photo features)- Read phone state (Two factor authentication) Troubleshooting - "Screen mirror image" detected. Go allow all permissions from your device settings app catalog and manualle enable all permissions for Once Mobile Driver.Application produced by Protacon Technologies.