Android rooting is the process of allowing
users of smartphones, tablets, and other
devices running the Android mobile operating
system to attain privileged control (known as
"root access") within Android's subsystem.
Rooting is often performed with the goal of
overcoming limitations that carriers and
hardware manufacturers put on some devices,
resulting in the ability to alter or replace
system applications and settings, run
specialized apps that require administrator-
level permissions, or perform other operations
that are otherwise inaccessible to a normal
Android user. On Android, rooting can also
facilitate the complete removal and
replacement of the device's operating system,
usually with a more recent release of its
current operating system.