GoKawiilAndroid still lacks native support for sideloading APK Bundles
Android Authority reports that despite Google tightening sideloading rules this year—requiring a device restart and a 24-hour wait before enabling it—the platform still cannot natively install APK Bundle (.APKM) files. Users wanting to sideload these split-file app packages, a format introduced in 2018, must rely on third-party apps to do so.