How to install split APKs with SAI (Split APKs Installer)

What SAI does

Android's own installer only accepts one APK at a time, so a bundle of base plus split APKs cannot be installed with a tap. SAI (Split APKs Installer) is an open-source app, on Google Play and F-Droid, that reads the bundle and hands all parts to the system in one session, which is exactly what Google Play does internally.

Installing a bundle

1. Install SAI from Google Play or F-Droid. Allow it to install unknown apps when Android asks; see allowing unknown sources.
2. Open SAI › Install APKs › pick the .xapk, .apks or .apkm file, or select several .apk files of one bundle at once.
3. Confirm. SAI shows the package name, version and the splits it found, then the system installer prompt appears once.
4. For XAPK bundles with OBB data, SAI copies the expansion folder before installing. On Android 11 and later it asks for storage access to Android/obb.

Installer modes

• Rootless (default): uses the standard session installer. The system prompt appears and you tap Install.
• Shizuku: with the Shizuku app running (started over wireless debugging), SAI installs silently, useful for many bundles in a row.
• Root: same, on rooted devices.

Common failures

• INSTALL_FAILED_MISSING_SPLIT: you selected only the base APK. Select the whole bundle.
• INSTALL_FAILED_UPDATE_INCOMPATIBLE: the installed app has a different signature; see the package conflict guide.
• INSTALL_FAILED_NO_MATCHING_ABIS: the bundle was generated for another CPU. Get a bundle for your device or the universal APK.
• Session abandoned or timeout: the phone's memory-saver killed the installer; retry with the screen on and SAI in the foreground.

Exporting a bundle from an installed app

SAI › Backup/Export lists installed apps and writes each one, with its splits, as an .apks file you can reinstall later or on another device. This is the reliable way to keep a copy of a version you like before updating.