These are instructions on how to root Karbonn A21 Smart (running on android 4.0) Smart Smartphone using Binary Toolkit on Windows Computer.

Requirements: Your Karbonn A21 Smart Smartphone should have at least 30-40 percent of battery to perform the rooting process.

Root Karbonn A21 Smart

  1. Download and install Karbonn A21 Smart USB Driver on your Windows Computer. USB Logo
  2. Download and extract the Karbonn A21 Smart root files on your computer. After extracting you will be able to see the following files:
  3. binary root files
  4. Enable USB Debugging mode on your Karbonn A21 smartphone. To Enable USB Debugging: Settings > Developer Options > USB Debugging (Tick to enable it). USB Debugging on Karbonn A21 Smart
  5. Connect your Smartphone to the computer. Mobile USB Computer
  6. Now, Open runme.bat (you have extracted it in Step#2). Runme.bat Binary Rootkit
  7. Once runme.bat is launched, Type 1 from the keyboard and press Enter key to begin the rooting process. Binary Rootkit
  8. Now, your smartphone will ask to perform Full Restore. To perform full restore, Tap on the Restore my Data to continue. Restore My Data Stock
  9. That’s it. Now your Karbonn A21 Smart is successfully Rooted. To check whether your tab is rooted correctly, open Applications Menu, there you will be able to see a new app installed, called SuperSU. If this app exists then it means you have successfully rooted your Karbonn A21 Smart. SuperSU Installed on Stock

    Optional: You can also verify the root status of your device by using the Root Checker App.


[*] No data loss process: Your Phone Data like contacts, pictures, videos, music and etc will be not affected with the above method. In short, no data loss process.

[*] Phone Warranty: If you follow the above instructions your phone warranty will be void.

[*] How to unroot? To unroot your device, Open SuperSU > Settings > Full Unroot.

[*] Karbonn Stock Firmware: If you are looking for the original Stock Firmware, then head over to the Karbonn Stock Firmware page.

[*] Karbonn USB Driver: If you are looking for the Original USB Driver, then head over to the Download Karbonn USB Driver page.