Adding external Link using ckeditor to ionic mobile applicaion

I have a php admin to create content for a mobile application using ionic framework, everything works perfectly. but I have a little problem. when the admin create a content and put an external link, this link is not working, even it looks like a link in the mobile application.

This is what I get from the php when requesting the page

{
  "id": "1",
  "created_date": "2015-05-19 09:09:39",
  "title": "Grade 12 Graduation Ceremony",
  "description": "<p><a href=\"http:\/\/ais.arrowad.sch.sa\/index.php?option=com_tz_portfolio&amp;view=article&amp;id=249:ais-igcse,-as,-a2-and-american-diploma-overview%E2%80%8F&amp;catid=41&amp;Itemid=538&amp;lang=en\">AIS IGCSE, AS, A2 and American Diploma Overview&rlm;<\/a></P
",
  "image": "1432012362.jpg",
  "thumbail": "",
  "lang": "all",
  "date": "2015-05-19",
  "timestamp": "1432044579"
}

I am prining the html like this : in the controller

 angular.module('App')
        .filter('to_trusted', ['$sce', function($sce){
            return function(text) {
                return $sce.trustAsHtml(text);
            };
        }]);

and in the html

<div ng-bind-html="data.content| to_trusted"></div>

so the link is not clickable, even I tried to make the link as a javascript "OnClick" but its the same problem

any help ? Thanks