The extendedproperties.xml contains the list of mobile device attributes.
The following code is an example of attributes in the extendedproperties.xml file.
<?xml version="1.0"?>
<root>
<deviceprop>streaming.protocol.rtsp</deviceprop>
<deviceprop>preferredmessageprotocol</deviceprop>
<deviceprop>midp.scrollbar.support</deviceprop>
<deviceprop>drmdownloads.audio.drm.forwardlock.realmedia.supported</deviceprop>
<deviceprop>streaming.video.real.codec</deviceprop>
<deviceprop>drmdownloads.image.drm.forwardlock.tiff.size</deviceprop>
<deviceprop>videotexinpage</deviceprop>
…………………………….
</root>