This API is available on Firefox OS for internal applications only.
Summary
signalStrength is a read-only property that gives the signal strength in dBm.
Syntax
var dataMCC = navigator.mozMobileConnection.data.signalStrength; var voiceMCC = navigator.mozMobileConnection.voice.signalStrength;
Value
Return a number.
This property can also be null if there is no signal at all.
Specification
Not part of any specification.