share on facebook not working on iphone

I made a button to share on Facebook, when clicking it opens the Facebook UI window, but it is not working on the iPhone.

I do not have an iPhone to test and I'm having trouble finding the error.

Here is the code I'm using:

function shareDialog() {
    var url = window.location.href;
    var title = $("meta[property='og:title'").attr('content');
    var description = $("meta[property='og:description'").attr('content');
    var imageUrl = $("meta[property='og:image'").attr('content');

    FB.ui({
        method: 'share_open_graph',
        action_type: 'og.shares',
        hashtag: '#kimaneiro',
        action_properties: JSON.stringify({
            object : {
               'og:url': url,
               'og:title': title,
               'og:description': description,
               'og:image': imageUrl,
               'og:width': 1200,
               'og:height': 630,
            }
        })
      },
      // callback
      function(response) {
        if (response && !response.error_message) {
          // 
        } else {
          //
        }
      }
    );
}

$(".Btn--facebook-share").click(shareDialog);

Does anyone have an idea of what might be happening?