If you wish to use your old WhatsApp account on a new phone and with a new phone number, you can use our Change Number feature.
There are two basic requirements to successfully use the Change Number feature:
You must be able to receive SMS and/or calls on your new phone number and the new phone must be connected to the Internet.
You must still have access to your old WhatsApp account. To verify that your old phone number is still linked to this account, open WhatsApp on your old phone. Then, tap More options > Settings > your profile photo.
Change your phone number
Start the process by using the change number feature on your old phone, then complete it by reinstalling WhatsApp on your new phone.