Originally Posted by
TrAAvis
I can't check my AAdvantage account on my iPhone anymore.
Yes you can, through the AA WebApp at
https://mobile.aa.com
WebApps are universal and do not depend on a particular operating system (or version), just a modern browser like Chrome (which is available for iOS).
BTW, the direct link to "AAdvantage" for the AA WebApp is
https://mobile.aa.com/mt/www.aa.com/...countAccess.do
AFIK the only thing that the AA WebApp doesn't have is, for some reason, the viewing of the upgrade/standby list or the caching of the boarding pass (requires taking a picture of the screen); everything else is there.