How to root and install system apps: https://www.youtube.com/watch?v=gxaCic6b_AM
This is a shoort look and tutorial for the mobile game memory editing (hacking) app called GameGuardian and how to use it to cheat in your favorite Android games.
More information and tutorials on cheating on Android mobile devices:
GameGuardian is one of the Best Memory Editors for Android at the moment.
Disclaimer: This will work for most single player games, but will only partially or not at all work for online games that are processed on the game server.
CoD Infinite Warfare Hacks: https://hackerbot.net/fps/plus/25-call-of-duty-infinite-warfare-codiw