The ability of an application or operating system to interact with external storage media inserted into a device running the Android operating system. This interaction includes, but is not limited to, reading data from, writing data to, and managing files and directories on the removable storage. A typical example involves a user installing a file management application designed to manipulate photos stored on a microSD card within a phone.
This capability provides considerable flexibility and expanded storage capacity for Android device users. Historically, the availability and implementation of this function have varied across Android versions, reflecting changes in security models and design philosophies. The external storage access enables users to store larger media files, back up data, and transfer files between devices with greater ease. However, it is important to acknowledge the security implications and potential risks associated with permitting applications extensive control over external storage.