[Forum] Forum Width Auto Size, Except On Mobile Devices?

[Einzel]

I have toyed with the stylevars and have come up empty here.

While using a PC, various browsers, I can see that my forums are Auto-sizing themselves based
on browser size [full screen vs. windowed view].

This is great but when I view my forums on my iphone or ipad, the forums are unbelievably small.

I don't really want to use vBulletin's mobile suite, just yet, so where am I going wrong?

I like being able to use forums in their native form, not mobile and not using Tapatalk [although I have it installed].

Do I need to enter code somewhere or have I just missed a stylevar setting somewhere?

I know this has to just be me because I have visited a lot of vBulletin forums and they fill my
mobile screens just fine.

[Einzel]

Note: I have the Mobile Style installed but still want to forums to auto-size to fill the screens
of whatever device may be using them.

So, my original questions remain...