White paper | Xperia™ XZ
In reality, "sdcard" is a "symbolic link" to "/data/media". However, from inside an Android application, "/
sdcard" can still be used. For example, you can use "sdcard/DCIM/100Android" to find all camera
images. The continued use of "/sdcard" to access the content area ensures compatibility across different
products and Android releases in this regard.
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December 2016