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    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 DOM MozSmsSegmentInfo interface provides information about how a string of text will be automatically split into segments. Each segment represents a single SMS of a multi-part SMS message.

    The MozSmsSegmentInfo interface cannot be instantiated directly; use the MozMobileMessageManager.getSegmentInfoForText() method to get such an object.


    MozSmsSegmentInfo.segments Read only
    The number of total segments for the input string.
    MozSmsSegmentInfo.charsPerSegment Read only
    The number of characters available per segment.
    MozSmsSegmentInfo.charsAvailableInLastSegment Read only
    The maximum number of available characters in the last segment.


    This is a non standard implementation, but it is discussed at W3C as part of the System Application Working Group.

    Specification Status Comment
    Messaging API Editor's Draft Editor Draft (WIP).

    Browser compatibility

    For obvious reasons, support is primarily expected on mobile browsers.

    Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
    Basic support Not supported Not supported Not supported Not supported Not supported
    Feature Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
    Basic support Not supported 12.0 (12.0) Moz Not supported Not supported Not supported

    See also

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    Last updated by: teoli,