How mobile-friendly is Lion Air?
Like many other airlines, Lion Air offers an iOS app for all of your Apple devices.
For Lion Air Lion Air Passport Club 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 Lion Air work with all Android phones and tablets from various manufacturers (Samsung, LG, Google, etc.), and Android Wear watches might also be compatible. Perhaps standard practice these days, the Android app offers the same functionality as the iOS app from Lion Air.
Also take a look at Lion Air's website by clicking here — you should be able to do what you need there.