I have some phones with graphene os, same model, same version. In one of them, i tried to update an app using the Play Store, the update was marked with a warning signal.
I uninstall the app, cleared Google Play cache and even uninstall Google Play, then i tried install the same app again, without any luck "System error in our systems" in the other hand, the rest of graphene mobiles can do it without any problems.
Any idea ?