On Android 5.0+ you need to use the Storage Access Framework to allow an app to store data on an external sdcard. An app correctly implementing this is OpenCamera (GPL), see their FAQ section. With ...

I was using termux to share data from /sdcard/android/obb to other phone using sshd and scp. But it was unable to access files of the obb folder.

Android may be much more customizable and “open” than iOS, but it offers a much more inferior user-experience. Things don’t always work like they should, user-interfaces across different apps and even ...