You can delete your account from within WhatsApp.
Deleting your account is irreversible. We can’t reverse this even if you delete it by accident.
To delete your account on Android:
- Open WhatsApp.
- Tap More options > Settings > Account > Delete my account.
- Enter your phone number in full international format and tap Delete account..
- Select a reason for why you’re deleting your account in the dropdown.
- Tap Delete account.
To delete your account on iPhone/IOS:
- Open WhatsApp.
- Go to Settings > Account > Delete My Account.
- Enter your phone number in full international format (Example: 918000522662 )and tap Delete My Account.