READ_EXTERNAL_STORAGE: Allows an application to read from external storage.
WRITE_EXTERNAL_STORAGE: Allows an application to write to external storage.
Other permissions
ACCESS_NETWORK_STATE: Allows applications to access information about networks.
CHANGE_CONFIGURATION: Allows an application to modify the current configuration, such as locale.
INTERNET: Allows applications to open network sockets.
SYSTEM_ALERT_WINDOW: Allows an app to create windows using the type TYPE_SYSTEM_ALERT, shown on top of all other apps. Very few apps should use this permission; these windows are intended for system-level interaction with the user.
