Storage
IN THIS DOCUMENT
Android has evolved over time to support a wide variety of storage device types and features. All versions of Android support devices withtraditional storage, which includes portable and emulated storage. Portable storage can be provided by physical media, like an SD card or USB, that is for temporary data transfer/ file storage. The physical media may remain with the device for an extended period of time, but is not tied to the device and may be removed. SD cards have been available as portable storage since Android 1.0; Android 6.0 added USB support. Emulated storage is provided by exposing a portion of internal storage through an emulation layer and has been available since Android 3.0.
Starting in Android 6.0, Android supports adoptable storage, which is provided by physical media, like an SD card or USB, that is encrypted and formatted to behave like internal storage. Adoptable storage can store all types of application data.
Permissions
