Solution: how to fix app not installed without rooted android 2020-19 Oreo/ App not installed android fix no root(English).If you are getting this error message using an Android device when you are trying to install/download an app/application/game from google play store then, this video will be helpful for you if an application is not installed on your phone. this is the best way to fix App not installed from google play store problem using Android phone/tablet.
In this video, I resolve this app not installed error using Vivo Android 8.1 Oreo mobile but according to this method, you can solve this problem using all Android phone or tablet with Android 4.0 KitKat, Android 5.0 Lollipop, Android 6.0 Marshmallow, Android 7.0 Nougat, Android 8.0 Oreo, Android 9.0 Pie, Android 10 Q.

Another solution here:
App Not Installed/App Isn’t Installed Error Fix Android Phone/Tablet [ No Root ]

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