How mobile-friendly is American Airlines?
The iOS apps from American Airlines will work with all of your Apple devices, from iPad to iPhone
For American Airlines AAdvantage members, you'll be able to manage your account from the app, though using their website will no doubt provide more functionality
As the most popular mobile platform in the world, American Airlines has taken notice of Android and provided an app for most Android devices. As is often the case, the Android app offers the same functionality as the iOS app.
Also take a look at American Airlines's website by clicking here — you should be able to do what you need there.