Rooting your Android smartphone or tablet gives you administrative privileges of the operating system, enabling you to modify or delete the system files, customize your phone book, replace the firmware and so much more.

However, there are also disadvantages to the process. Most importantly that it voids the warranty of your device.

Also, your device no longer remains immune to the security threats after rooting.

If you have a rooted Android device and you want to get back its warranty or keep it protected from threats, you can simply unroot it.

There are several methods to unroot a rooted Android device. Here are some of them.

Method 1: SuperSU Unrooting

SuperSU is the quickest and easiest way to unroot an Android device. If this app is already isn't installed on your device, you can download it from Google Play Store.

Now launch the app, tap the Settings tab, and scroll down to the bottom until you see a "Full Unroot" option in the "Cleanup" section. Tap it, and a new dialogue box will open informing you about the consequences of the process and ask you if you wish to continue.

Tapping 'Continue' will unroot your device in a few moments. Now reboot your device to finish the process.

Method 2: ES File Explorer:

ES File Explorer is a file manager app which enables you to remove system apps using its root functionalities.

Following are the steps to unroot Android through ES File Explorer:

Download and Install the app from Google Play Store.

Now launch the app and click Menu button.

Now go into Tools, select Root Explorer and turn it on.

You will now see a message from the Superuser requesting you to grant permission to the root privileges of the app. Tap 'Grant' to proceed.

Now go back to the main menu and tap '/' at the top.

Go into the main directory and then into 'bin'. Find supersu and 'busybox' folders in the bin and delete them.

Now go back to the main directory using '/', open the 'app' folder and delete 'superuser.apk' file there.

Now reboot your device after which it should be unrooted.

Method 3: Flash Stock firmware

If the above two methods do not work for you, another option is to unroot your device is to flash stock firmware.

It should be noted the method of flashing the stock firmware varies in different devices, so I'll recommend you look for one related to your device.

Here is a general method to unroot an Android device by flashing stock Firmware

Before starting, backup all of your data as it will be erased after unrooting.

Search for the most updated stock ROM for your device model from Google or XDA Developers forums.

Install the compatible flash tool on your device.

Now connect your device to your PC via USB cable and transfer downloaded files into it.

Now launch the flash tool and flash the stock ROM on your phone.