This article is in need of a technical review.
This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.
mcc is a read-only property that represents the Mobile Country Code (MCC) of the network operator.
var mcc = navigator.mozMobileConnection.data.network.mcc
Return a number.
Not part of any specification.