1. How to install ゆうちょPay - あんしん&べんりなゆうちょのスマホ決済 APK/XAPK file?
APK file: Tap on the downloaded APK file, and follow the on-screen prompts to complete the installation.
XAPK file: It's a compressed package containing an APK file and additional data files. You need a XAPK installer to install it. If you're using MEmu Android Emulator on PC, simply install the XAPK file directly into MEmu.
2. Can I use ゆうちょPay - あんしん&べんりなゆうちょのスマホ決済 on my PC?