This video provides a comprehensive demonstration of the entire process for permanently deleting a Facebook account on both mobile and computer. The tutorial starts from accessing Facebook's settings page, guiding users step-by-step to find Account Center, Account Ownership and Control, ultimately completing the account permanent deletion request. The video specifically explains the 30-day grace period mechanism after deletion, during which users can still cancel the deletion and reactivate their account. The entire process requires password verification for identity authentication and selection of a deletion reason. The operational path is generally consistent whether using the mobile app or the web version, making it suitable for all users who want to completely deactivate their Facebook account. The tutorial language is concise and clear, with explicit instructions on click locations for each step, allowing even beginners to easily follow along and complete the operation.