Deleting your account will do the following
- Delete your account from WhatsApp.
- Delete you from your friends' WhatsApp Favorites lists.
- Delete you from all WhatsApp groups.
- Erase all your chat history.
- Delete your WhatsApp service payment information.
To delete your WhatsApp account
- Open WhatsApp.
- Go to Options > Settings > Account > Delete My Account.
- Give us feedback (optional).
- Select Next to enter the number you registered with WhatsApp.
Note: We cannot delete your account for you.
Learn how to delete your account on: Android | iPhone | Windows Phone | BlackBerry | Nokia S60 | BlackBerry 10
Cheers,
WhatsApp Support Team