Originally Posted by Lobaeux

I'm using an iPhone 5S and iOS9. When I switch to another app or use another window for Safari, after a certain period of inactivity, the APC site defaults to the mobile version of the site. I can request the desktop version, but this becomes more of a PITA.

It also happens during refreshing of the site, after a period of time, the site automatically reverts to the mobile site.