LG phone package not working

[4lfa...@gmail.com]

Okay so I created multiple simple apps using the app inventor but when I go to my large project I could load it in the companion but when I got to packaging it and downloading it using multiple ways (USB,QR Code and computer download) it always fail in the installation of it and yes the setting to download/install app outside of google play is active.

The phone i am using is a LG G4

I also managed to install it into a friend's phone that is a Samsung but all LG phones I tried just don't seem to be able to install it