Question 1

What is the program for?

Accepted Answer

To install applications consisting of Split.

Question 2

What is split?

Accepted Answer

These are components of the application, which can contain localization, application graphics, etc.

Question 3

The program does not install, does not work correctly! MIUI firmware, how to fix it?

Accepted Answer

Solutions to the problem: put another firmware, use root, Shizuku installer, disable MIUI optimization in the developers menu.

Question 4

Does the program work without root access?

Accepted Answer

Yes, the program works with or without root access.

Question 5

After installing the program, Google Play services started giving errors, and I gave all the necessary permissions. How to fix it?

Accepted Answer

Find Google Services in the settings. Disable all permissions for them, and then enable them again. The problem should disappear.

Question 6

What is the Shizuku Installer and what is it for?

Accepted Answer

Shizuku can give ADB rights to applications. Shizuku installer behaves similar to root installer, but it does not need root.
Perhaps help people who have OS is: Flyme, MIUI, EMUI, etc.

Скачать SAI (Split APKs Installer) - APK - v4.0