Is it possible to make AsyncUpload add the necessary properties to <input file>-tag, ref: http://www.w3schools.com/tags/att_input_accept.asp
, so that this will be the rendered html: <input type="file" tabindex="0" class="ruFileInput" name="radasyncUpload_1file0" id="radasyncUpload_1file0" size="23" accept="image/*">
When uploading from a smartphone it would be better to go directly to the Gallery.