App store Hacking?

Uhm I would like to ask a VERY important question about ZTE. I would like to know if you are aware of the fact that there is a ZTE dedicated app in the app store that installs itself to anyone's ZTE device, giving it FULL ACCESS TO EVERYTHING. Including personal stuff. It messes up the phone terribly and is uninstallable. It doesn't show up directly on your phone nor in the apps, but only in the app store. It installs weeks before there is time to notice. (I use Android's lookout app to scan apps everyone once in a while. Maybe once a week. The 'app' says in the app store that it has been installed 12 weeks prior to when I noticed today. I noticed that my phone was acting weird, but it wouldn't do anything overly concerning a while back or so (Or maybe so. My location would turn on whenever it wanted to and there would be a random notification asking to turn it on like 'Google needs permission to access location' or something with an option like 'view managements'. I would just click off the link. Comes to find out that it still comes on when I do that and it does even after I decided to go to the management thing to decline. There it stated one of those deny, and never ask again things, in which I denied and checked the never ask again box. But it still turned it on in which I turned it off afterwards.) Not too long ago I tried to download an app, in which It couldn't. I went to the lookout app and all of a sudden there is a major problem. I looked all around including in the lookout app to browse around apps to see it there was anything fishy. The 'SystemUpdates' app under 'ZZte' didn't show in the app browsing section where I see all the permissions of my apps in the lookout app, nor did it pop up when I scanned my device, but it still remained to be a problem from what the lookout app said.) Apparently it happened to everyone who has the app from what I read in the comments. One stated that it completely messes your phone up when you try to get rid of it. What's going on?