Many people lost data of whatsapp due to many reasons, know i will tell you the way how you can recover data of whatsapp.

1. How to Recover Deleted WhatsApp
Messages
If you want to recover messages there are two ways to recover messages
To recover Recent Chat Messages
You can recover recent messages by uninstalling Whatsapp and install again. Whatsapp now
automatically created backup daily at 4 am. The application stores data in SD card or also in external
memory. When you reinstall the application, it will ask you to restore your messages back only by
click on button of ‘Restore’ it will create restore your messages.
You can also send message to all contact lists at once on Whatsapp by check this article
Recover Messages Older Than 7 Days
If you want to recover whatsapp messages older than 7 days for this purpose you have to use third
party software. Or I want to say Manual Recovery
Manual Recovery
 For this purpose you have to go to the folder of ‘Database’ you will see the chats having different
name like “msgstore-data format.db.crypt”
 You have to rename this Msgstore file to the “Old” or something related to filename.
 After doing you will see the other file named according to date wise. Choose your desire file and
named them of older file.
 Go to the home screen reinstall this application and prompt to restore file and restore the desire
file which is mistakenly deleted by you.
 I want to tell you that doing this you will lose your recent history of your messages.