Open WhatsApp, go to Settings > Account > Delete My Account. Enter your registered phone number with country code, confirm deletion, and tap Delete My Account. This permanently removes your data, chats, and groups.
To delete your WhatsApp account, open the app and go to Settings → Account → Delete My Account. Enter your phone number and follow the prompts to confirm deletion. This permanently removes your account, message history, group memberships, and backups from WhatsApp servers. Make sure you really want to delete it.
In order to remove a WhatsApp account, open WhatsApp and tap Settings Account Delete My Account. Add your full international phone number, verify why (and do not skip this) and tap Delete My Account. This irreversibly deletes your account and information.
