Update: I have updated this tutorial with a new working tool. Just download it from your phone and follow the on-screen instructions to install it. This is the tutorial which explains how to root your Samsung Galaxy S Duos without using computer or laptop. By using this tutorial, you can root your device directly from your phone whether you are at the home or anywhere.
In Samsung Galaxy S Duos (S7562) smartphone, it is very easy to download rooting file on your device itself.
Procedure to root Samsung Galaxy S Duos Without PC/Laptop:
1.To get started, go to Settings -> Device Administration -> Unknown Sources (tick the box to enable it).
2.Now, download the rooting package to your phone. Once done, install the poot.apk on your device.
3.Next, open the app. It will ask you to download and install Ministro II app. Just follow the on-screen instructions to visit Google Play Store, download and install the app. Once done, you will be asked to update Ministro library. Just click on “Yes” to update it.
4.Once you have done that, you will see two options: “Press here to Poot” and “Built in root check.” Click on the first option. After a while, you will see the following three options: “Get Superuser,” “Get root-checker” and “In-built root checker.”
5.Now, select the first option and download the Super SU app from the Google Play store. Once done, reboot your device.
That’s it. Now you have finished rooting your Samsung Galaxy S Duos (S7562) Android smartphone without the help of a PC or Laptop. You can download and install the “Root Checker” to check your device’s root privileges.
That’s it! Now, your phone has root access. Enjoy!