To do what you're trying to achieve is considered as a custom code modification.
I think I found a solution.
You have to edit feed.php in ow_plugins/newsfeed/mobile/controllers/
Make the following change:
Replace
$feed = new NEWSFEED_MCMP_Feed(new NEWSFEED_CLASS_UserDriver(), 'my', OW::getUser()->getId());
with
$feed = new NEWSFEED_MCMP_Feed(new NEWSFEED_CLASS_SiteDriver(), 'site', OW::getUser()->getId());
and upload it. I don't use friends plugin, so I don't konw if it also works if you have installed it. But mobile Newsfeed should now also show things from people you don't follow and look like the Newsfeed on Index/Main page. Maybe you should test it on a local server first. I hope this also works on your oxwall sites.
Samu
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