Since Last week I have been working on developing ASP. Net MVC 2 Application for Blackberry mobiles. We have used the JQuery Mobile plugin , We were testing application on Blackberry OS 6, But when we testing with OS 5 phone. It does not render JQuery codes and css. So after going trough blackberry documentation we found out that even thought jQuery Mobile site telling its support for BB OS 5. It does not  really support.