<Table> <Tr> <Td> </Td> <Td> This section does not cite any sources . Please help improve this section by adding citations to reliable sources . Unsourced material may be challenged and removed . (March 2014) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This section does not cite any sources . Please help improve this section by adding citations to reliable sources . Unsourced material may be challenged and removed . (March 2014) (Learn how and when to remove this template message) </Td> </Tr> <P> Arbitrary Strength Unit (ASU) is an integer value proportional to the received signal strength measured by the mobile phone . </P> <P> It is possible to calculate the real signal strength measured in dBm (and thereby power in Watts) by a formula . However, there are different formulas for 2G, 3G and 4G networks . </P>

What does asu stand for in signal strength