Device Metadata

Android also strives to restrict access to data that is not intrinsically sensitive, but may indirectly reveal characteristics about the user, user preferences, and the manner in which they use a device.

By default applications do not have access to operating system logs, browser history, phone number, or hardware / network identification information. If an application requests access to this information at install time, the installer will prompt the user asking if the application can access the information. If the user does not grant access, the application will not be installed.