App Ops is a framework inside Android which allows the permissions of individual apps to be tweaked. Android was built with an app permission system and when you install an app they are asked to agree to the permissions that the app requests. If you decline then the app isn’t installed. It is an all or nothing situation. The App Ops functionality, when exposed via any one of the handy apps in the Play Store, allows users to change the permissions of an app.
What App Ops does is allow a user to revoke an individual permission for an app. If you are running Android 4.3, Android 4.4.0 or Android 4.4.1 then App Ops is still accessible. If you upgraded to Android 4.4.2 then Google has slammed the door shut. It is still possible to access App Ops on 4.4.2 if your phone is rooted and you install the Xposed Framework for Android 4.4. Alternatively apps like App Ops X can do some of the installation for you, but again only if your phone has root access.
I been trying to figure it out havent so far but i only tried for ten minutes. My game is free fire and it can detect gg and comes up with MTP warning. let me know if this works for you.
Heres the web address of where i got this info at.