Rooting is a kind of jailbreak in Android, a means of unlocking the operating system so you can install unapproved (by Google) apps, update the OS, replace the firmware, overclock (or underclock) the processor, customize anything as you like, and so on.
Normally, for most users, rooting sounds like -- and can be -- a scary process. After all, changing your smartphone's core software might seem like a recipe for disaster. Even one little wrong move could make your phone out of order in the end.
Thankfully, there's a new tool that makes rooting a one-click case: Kingo Android Root. It's free, and have passed my tests with a Virgin Mobile Supreme, it works like a charm. (Check the compatibility list before you proceed, keep in mind that the tool worked on the Supreme although it wasn't on the list.) Here comes how to get started.
Download and install Kingo Android Root.
Enable USB debugging mode on your phone.
With Android 4.0 or 4.1, tap Settings, Developer Options, then choose "USB debugging." (You may need to switch "Developer options" to On before you can do so.) With Android 4.2 and above, tap Settings, About Phone, Developer Options, and then choose USB debugging." At last tap OK to approve the setting change.
Run Android Root on your PC first, then connect your phone to PC via USB cable. Shortly after the connection is done, you can see picture like below.
Click "Root", and then wait will the tool finishing its work.
It took about two minutes to get everything done with the aforementioned Supreme, including reboot automatically in the end.
If you want to withdraw rooting, just run Android Root again, connect your phone, and then click "Remove Root".
With all done, you can take advantage of options like USB On-the-Go to make your unexpandable phone expandable . Click "comments" to share your favorite function on a rooted Android phone.