ZArchiver (Available safely on the Google Play Store).
“Don’t download those,” Leo warned Sam. “They’ll just spam you with pop-ups or worse.”
Are your game files currently in ?
Open Dolphin, tap the button (plus icon), and select your Wii Games folder.
This is the only scenario where a "Wii Backup Manager APK" would theoretically be useful. If you want to take your Android phone, load it with WBFS files, plug it into a real modded Wii via USB-C-to-USB-A, and play.
Choose as the target format. Leave the compression level at its default setting.
Since the original "Wii Backup Manager" is built for Windows, Android users typically use these tools to achieve the same results: