To apply for the WhatsApp API Verification, you must use a number that is not being used with any WhatsApp app.

You can use a phone number that is registered in the Android app, IPhone or the WhatsApp Business app.

However, to register this phone number in the WhatsApp Business API, you must follow the steps below to delete the WhatsApp account associated with that phone number.

Once a phone number is registered in the WhatsApp Business API, it cannot be used for WhatsApp Business or the WhatsApp consumer application. A phone number can be upgraded to the WhatsApp Business API, but it cannot be downgraded.

To delete your account

1. Open WhatsApp.
2. Click More options > Settings > Account > Remove my account.
3. Enter your phone number complete with international code and click DELETE MY ACCOUNT.
4. Select a reason why you are deleting your account from the drop-down list.
5. Click DELETE MY ACCOUNT.

When deleting your account:

• Your WhatsApp account is deleted.
• Your message history is deleted.
• Deletes you from all WhatsApp groups.
• It deletes your backup.