Hi James,
You have to do a simple changes in Server file in webapps and i file called Zen.
Server File Loc: SAP BusinessObjects\tomcat\webapps\MobileBIService\WEB-INF\classes
\internal
Edit the file called Zen and add in addition to (ipad,iphone already these will be there)
document.supported.devices=androidtablet,androidphone
Thanks and Regards
Sateesh