code: function () {
      var check = false;
      if (navigator.userAgent.match(/Android/i) ||
      navigator.userAgent.match(/webOS/i) ||
      navigator.userAgent.match(/iPhone/i) ||
      navigator.userAgent.match(/iPad/i) ||
      navigator.userAgent.match(/iPod/i) ||
      navigator.userAgent.match(/BlackBerry/i) ||
      navigator.userAgent.match(/Windows Phone/i)
     ) {
        check = true;
      } else {
        check = false;
      }
      app.mobileBrowser = check;
      return check;
    }
docs: [description]
  @return {boolean} [description]