RSCP

Although the adaptable standards ascertain an ASU bulletin ("Active Set Update") acclimated in handover procedures, on Android phones the acronym ASU has annihilation to do with Active Set Update. It has not been declared absolutely by Google developers, but it is believed to beggarly "Arbitrary Scale Unit" or "Android Signal Unit". (see NeighboringCellInfo)

There are abounding GSM Signal Monitoring applications accessible for android OS.