Sometimes you accidentally delete WhatsApp text messages or need to re-install it due to software update. Don’t worry ,WhatsApp has made recovering deleted messages very easy. You do not even need a third party data recovery app. WhatsApp automatically backs up your messages everyday and comes with built in functionality to restore them. For android devices backup is stored on the SD card and for iPhone this is stored on iCloud.
There is a limitation of this restoration facility of WhatsApp .There is no direct option to restore the text messages within the app. In order to restore the deleted messages, first you need to uninstall the app and then re-install it. By default, WhatsApp make a backup of your all messages daily at 4 am, but you can backup conversations manually at any time.
2. Next time you install the WhatsApp , it will use this backup copy to recover the messages.
3. Uninstall the app and re-install it .Launch the app and immediately following the mobile verification procedure you’ll be asked if you want to restore from backup.