I've created KMZs that work well in Google Earth. Their placemarks reference embedded images files like so
<Placemark>
<name><![CDATA[IMG_1288]]></name>
<Snippet maxLines="2"><![CDATA[]]></Snippet>
<description><![CDATA[<center><img src="images/IMG_1288.jpg"><br></center>]]></description>
<Point>
<coordinates>174.812836,-36.826668,0</coordinates>
</Point>
</Placemark>
The KMZ structure is
doc.kml
images/
IMG_1288.jpg
The same KMZ file does not work on iOS though. The popup window opens but it displays a broken image icon. What do I need to do to embed an image in a KMZ so that Google Earth for iOS can display it?