onSortCol: function (index, iCol, sortorder) {
    var $jg = $(this);
    var isFrozen = $jg.jqGrid('getColProp', index)['frozen'];
    if (isFrozen) {
        console.log('index=' + index + ',iCol=' + iCol + ',sortorder=' + sortorder);
        // look in the "real" header for the correct sort icons
        // copy that to the "fake" header used for Frozen column
        var par = $jg.closest('.ui-jqgrid-view');
        var headers = par.children('.ui-jqgrid-hdiv');
        if (headers.length === 2) {
            var master = headers.get(0);
            var slave = headers.get(1);
            var mHdr = $('table th', master).get(iCol);
            var sHdr = $('table th', slave).get(iCol);
            $('span.s-ico', sHdr).remove();
            $('span.s-ico', mHdr).clone().appendTo($('.ui-jqgrid-sortable', sHdr));
        }
    }
}

Thanks. Will look at this.

Regards

  ASC/DESC icons is not getting hidden or changing when we click on the colum and If we set non frozen column as default sort column & we click on the frozen column to sort, (ASC/DESC) icon is not appearing for  the frozen column.

Regards,

Rajesh.B