The easiest way to root any android device running on ice-cream sandwich or jellybean without a pc is by using an apk file...
There are many apk files available out but the most preferable once are:
(1) Towelroot:This app allows you to unlock the super user with a single touch.
The link for Towelroot is http://towelroot.info/
(2)kingroot:It is the most likely app used for rooting any android device.This app also allows to root
your device with a simple click
The link for kingroot is http://www.kingroot.net/down
(3)Framaroot:This app also allows you to root your phone with a simple click.
The link to framaroot is http://framaroot.net/
with the help of this apk's you can unlock your super user(root your device).
