MozMobileConnectionInfo.lastKnownMcc Redirect 1

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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.

This API is available on Firefox OS for certified applications only.


lastKnownMcc is a read-only property that represents the Mobile Country Code (MCC) of the last known network operator.


var dataMCC  =;
var voiceMCC = navigator.mozMobileConnection.voice.lastKnownMcc;


Return a number.


Not part of any specification.

See also

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Last updated by: Sheppy,