How to use two whatsapp number in one device

Whatsapp is a very popular messaging apps .You can download it from anywhere from android apps store. But you can use only 1 whatsapp account in one device . But , You can't install another whatsapp for your second number.To use two numbers in one devise,follow the steps given below.
( i ) First , Backup all of your whatsapp data . [ For backup , Open whatsapp , then go to Setting > Chat setting > Backup Conversation
( ii ) Now Sdcard/Memory Card , Then find out Whatsapp folder .
( iii ) Now , change the folder name from Whatsapp to OGWhatsapp .
( iv ) Now , Uninstall your Whatsapp .
( v ) And , then download This Whatsapp " OGWhatsapp " .
( vi ) Now , Install and run OGWhatsapp on your android device with the old number .I means , when you will open OGWhatsapp , it will say for Log in , then use your old number . [ Old number means the number which were you using before uninstalling old whatsapp ]
( vii ) Now , you have successfully set up OGWhatsapp account .
( viii ) Now , Go to Google Playstore , and then download Whatsapp again .But at this time , use your New number for sign up .
Now , after above tutorial , you will see at your mobile home screen , there is two Whatsapp shortcuts :

First , OGWhatsapp [ with your old number ]
2nd , Whatsapp [ with your new number ]
Note:=OGWhatsapp is not available in google playstore,so you have to download it from it's own website.[just google it].