With Android version 4 or lower, you may not be able to purchase tickets due to security implications.
In that case, please purchase from another mobile or PC.

■ How to check the version of Android is here
Tap "Menu icon" on the home screen.
When the screen has changed, tap "Settings".
When the setting screen is displayed, scroll down to the bottom and tap "Terminal information".
The numbers listed below the Android version will be the OS version.