This path is working on all Android versions: /storage/emulated/0/
/mnt/sdcard (Android < 4.0)
/storage/sdcard0 (Android 4.0+)
The “/storage/emulated/0/” folder does not really exist. It’s what might be called a “symbolic link”, or, in simpler terms, a reference to where the real data is stored.
https://superuser.com/questions/949659/how-can-i-access-storage-emulated-0-dcim-on-android-device