Upload Image using $http.post not working


Hello, I am currently working for Android App. Part of the requirement is I need to transfer some 15 photos at a time.
I am using below code. Some how, my code never return success or failure. It always in pending state. If i try uploading single file everything works fine. Can some one help me with this? (I tried even with $http.post. it is same result)

Do you think I should use $cordovaFile.fileUpload()?

var fd = new FormData();
                fd.append('file', blob, 'icon.jpg');
                fd.append('data', JSON.stringify(request));
                    type: 'POST',
                    url: url,
                    data: fd,
                    dataType: 'json',
                    contentType: false,
                    cache: false,
                    processData: false
                .done(function (result) {
                .fail(function (jqXHR, status, err) {
                    deferred.reject({ data: err, status: status });