This article is in need of a technical review.

This feature is not on a current W3C standards track, but it is supported on the Firefox OS platform. Although implementations may change in the future and it is not supported widely across browsers, it is suitable for use in code dedicated to Firefox OS apps.

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


The cardState is a read-only property that indicates the state of the device's ICC card.


var state = navigator.mozMobileConnection.cardState


Returns a string representing the ICC card's state. Possible values are:

  • unknown
  • absent
  • pinRequired
  • pukRequired
  • networkLocked
  • ready

This property can also be null.


Not part of any specification.

See also

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Contributors to this page: fscholz, MHasan, kscarfone, justinpotts, Sheppy, Jeremie
Last updated by: fscholz,
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