[android] INSTALL_FAILED_USER_RESTRICTED : android studio using redmi 4 device

NO NO NO !!!!!

it's simple, in MIUI 9.x you need developer settings ON and then

  • Settings -> (system & device section) Additional Settings -> Developer options

(Debugging section)

  • Turn On "USB Debugging"
  • Turn On "Install via USB"

Then in Android select Runb app and choose your Xiaome phone

EDIT: you will also need allow installation from unknown sources