According to a few commits, it appears that some carriers are pushing for the ability to hide the signal strength in the next version of Android. Currently, the signal strength can be found under “Sim Status” in the settings menu. This is the actual numerical signal strength measured in dBm or asu: the lower the dBm number, the worse the device’s network signal is.
While most users wouldn’t care to look at the exact dBm value of the signal strength, it can be a useful number when comparing how multiple devices on the same network perform. Your device’s signal strength might be incredibly important to detect the call quality, data connectivity & speed. Looking at the dBm value when using your phone in certain areas can be a useful way to see how well your new device fares on the network.