System core

com.mediatek.engineermode

EngineerMode

Risk: Safe
Source: Third party
What it is: System core

What it is

Engineer mode you can access by dialing a secret code (*#*#3646633#*#* on some Xiaomi phones for instance)

It enables you to access the debug/logged data and some hidden firmware settings.

Commands

adb shell pm uninstall --user 0 com.mediatek.engineermode

To put it back:

adb shell cmd package install-existing com.mediatek.engineermode

Every removal listed here is per-user only: the system image is untouched, and the restore command puts the app back from the copy already on the device. Nothing is downloaded.

This is not the directory. Here we say what a package is in general; what happens on your particular television is on your model's entry, and that one wins. The same package can be dead weight on one set and hold the home screen up on another.