The app used to demonstrate how to share and access files on your android device via PC web browser or another mobile device is X-plore File Manager. Follow the steps below for setup and use.
HOW TO SETUP AND USE
- First, download and install x-plore file manager
- Go to Settings > More (Wireless & Networks) > Tethering & portable hotspot
- Enable Wi-Fi hotspot and exit Settings
- Run X-plore file manager
https://www.leakite.com/x-plore-manage-files-on-android-device/
https://play.google.com/store/apps/details?id=com.lonelycatgames.Xplore