Rooting an android device like LG double play using the Super One Click method is very simple and you only need few things to do and your android device will be rooted. Although it seems that you are loosing the warranty of your device but actually you can restore your LG DoublePlay device to original firmware i.e to Android 2.3 Gingerbread which comes with it by default.
How To Root LG Double Play C729
Step 1: You need to confirm few things as a first step i.e. at least 60% battery available, USB drivers are installed and USB debugging is enabled. After these pre requirements are done now go to next steps.
Step 2: Download the SuperOneClick rooting tool for LG DoublePlay by clicking the below given download link.
Download LG Doubleplay Root tool For Windows System or download using the Mirror Download Site
Step 3: Run the superoneclick tool as administrator by right clicking the .exe file and clicking Run As Administrator.
Step 4: Now connect your LG Double Play to your computer using usb cable and on the computer screen inside the SuperOneClick window click Root, the rooting process will start immediately and will finish with a message of success.
You can verify your LG rooting by running the famous app that tells you whether your android device is rooted or not.You only need to download and install Root Validator from Google Play Store and run, just tap the button Do I Have Root? and app will tell you the result.