How mobile-friendly is Air New Zealand?
Air New Zealand provides an iOS app that is compatible with iPhone, iPod, and iPad.
For Air New Zealand Airpoints members, you'll be able to manage your account from the app, though using their website will no doubt provide more functionality
The Android apps from Air New Zealand work with all Android phones and tablets from various manufacturers (Samsung, LG, Google, etc.), and Android Wear watches might also be compatible. As is often the case, the Android app offers the same functionality as the iOS app.
Also take a look at Air New Zealand's website by clicking here — you should be able to do what you need there.