title: ngf-select is not working on iphone5
body: <p>Here is my html</p>
  
  <pre><code>&lt;input id="fileUploaderInput" ng-model="$ctrl.files" ng-change="$ctrl.onSelectFiles()" style="display: none" type="file"
             ngf-select multiple&gt;
  
  &lt;button type="button" class="button shed-btn button-energized" ng-click="$ctrl.onClickBrowse()"&gt;Browse&lt;/button&gt;
  </code></pre>
  
  <p>My js code which triggers the click event of input element on button click. </p>
  
  <pre><code>vm.onClickBrowse = function () {
        document.getElementById('fileUploaderInput').click();
  
      }
  </code></pre>
  
  <p>It is working fine on android and iphone6 but not on iphone5. Any help would be appreciated</p>