(keitai-l) question regarding SSL and mobiles

Hi all,

I'm having issues with an SSL enabled mobile site displaying a "This
site is not certified" when viewed, regardless of the carrier.
The site resides on a hosted account, but has a dedicated SSL (GeoTrust
QuickSSL Premium Certificate ).
Viewing the PC version of the site results in no warning, regardless of
browser used.
Any suggestions or insight on how I can make this go away?

Thanks,
Kris