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Every Android-compatible device supports a shared "external storage" that you can use to save files. This can be a removable storage media (such as an SD card) or an internal (non-removable) storage. Files saved to the external storage are world-readable and can be modified by the user when they enable USB mass storage to transfer files on a computer.== External Storage Public Directory ==Some people are using a "media" intermediary directory between the standard public directory and the storage root. See below * /sdcard/media/alarms OR /sdcard/Alarms * /sdcard/media/notifications OR /sdcard/notifications* /sdcard/media/ringtones OR /sdcard/ringtones* /sdcard/media/ui OR /sdcard/uiWarning: This may be incorrect. Below is from the Android developer's reference explaining the correct way.Android developer's reference explains that there are certain public storage directories that are not specifically tied to a specific program. So if a program is uninstalled, it should never remove data from one of these standard public storage directories. These directories lay at the root of the external storage, such as Music/, Pictures/, Ringtones/, and others.* Music/ - Media scanner classifies all media found here as user music.* Podcasts/ - Media scanner classifies all media found here as a podcast.* Ringtones/ - Media scanner classifies all media found here as a ringtone.* Alarms/ - Media scanner classifies all media found here as an alarm sound.* Notifications/ - Media scanner classifies all media found here as a notification sound.* Pictures/ - All photos (excluding those taken with the camera).* Movies/ - All movies (excluding those taken with the camcorder).* Download/ - Miscellaneous downloads.So an example would be /mnt/sdcard/Pictures which is made up of the first part, /mnt/sdcard (or just /sdcard) that being the root of the sdcard and then one of the directories above.