HOW TO INSTALL VERY LARGE APKS FILES ON MODERN XIAOMI PHONES BASED UPON ANDROID 16

Previously it can be done by means of [SAI application] .
MIUI optimizations should be turned off in the Developer settings,
but with new autocratic and restrictive Android versions > 15 it just disappeared.

Luckily we have a nice workaround. Developer options should be turned on.
At the very bottom there should be a section called Autofill.
Tap multiple times on setting Reset to default values.
Turn off system optimization.

Now we are able to use SAI to install large third party applications as previously.
Don’t forget to turn these “optimizations” on because very likely GUI will break in many places.
In my case on Xiaomi 15 Ultra [custom keyboard] stopped working, instead of it appeared
default bloated keyboard from Xiaomi and it didn’t even allow to print symbols.
What a load of cr#p!

You can set your keyboard here:

Settings > Additional settings > Languages & input > Manage keyboards