How to root:

1. Go to your phone browser like chrome, dolphin and other browser you have.
2. Then go to 4shared.com (create your account)
3. After creating your account search for RootS5830i.
4. Click on the first one then download it.
5 Then save it to your SD card. 
6. Once you've done that turn off you phone or simply go to recovery mode (volume up button+home button+power button) use the volume buttons to move up and down 

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7. Once your in Recovery mode select update from SD card then click on the file the root file that you download.
8. Reboot your phone.