no mobile display only full site

I have a site example www.test.com.au mobile on this site ok I also want to have sub sites like www.test.com.au/test1 - this site is setup as a totally new site build , activavte MJ as normal but get full display

MJ uses cookies to save current mobile markup, and both sites share the same cookies. So, it may be that you switched to "Standard version" on first site and as a result get full version on second one.