Tadd,
Do you know what happens when a user tries to login with iPhone? We test with iOS for our releases, mainly using an iPad. To our knowledge, it should work.
One thing you may want to try is to use our custom image login button instead of the Javascript version that's used by default. There's an option to use an image in the SCLogin module. If you're using the {JFBCLogin} tag, you can replace it with a little HTML like:
<a href="javascript:void(0)" onclick="jfbc.login.login_custom();"><img src="/linktoimage.jpg" /></a>
You can see more on how to do that in our
Facebook for Joomla Common Support Questions
.
Keep us posted on the issue you're having, and we'll gladly look into it further.
Thanks,
Alex