The Change Number feature allows you to change the phone number associated with your WhatsApp account on the same phone. This feature is intended to be used before you verify your new number.
If you use our Change Number feature, your chat history will continue to be available on your phone with the new phone number as long as you continue using the same phone.
Please follow these steps to change your account phone number:
Please make sure your WhatsApp contacts have your new phone number saved in their phone’s address books to ensure a seamless messaging experience.
WhatsApp Support Team