I am developing an application for the S10 using Android Studio 4.1.1. I can successfully debug the application from the Studio. When I use the Studio to create an app-debug.apk, app-release.apk and use Apps -> Special Access -> Install unknown apps -> Cx File Explorer, I get the following:
Congratulations on your first post on the Samsung Developer Forums, Welcome !!!
The query you’ve asked for is a general android issue which is the same for all android devices. You would be able to find a lot of responses that cover most of the directions on this popular post: