Rooting your device means obtaining "superuser” rights and permissions to your Android’s software. With these elevated user privileges, you gain the ability to load custom software (ROM’s), install custom themes, increase performance, increase battery life, and the ability to install software that would otherwise cost extra money.
Rooting is essentially "hacking” your Android device. Its same like to "Jailbreaking” your iPhone.
Why We Call it Rooting?
The word "root” comes from the Linux field and is used to describe a user who has "superuser” rights or permissions to all the files and programs in the software Operating System. The root user, because they have "superuser” privileges, can essentially change or modify any of the software code on the device.
Rooting your device means obtaining "superuser” rights and permissions to your Android’s software. With these elevated user privileges, you gain the ability to load custom software (ROM’s), install custom themes, increase performance, increase battery life, and the ability to install software that would otherwise cost extra money.