Can we reuse the phone number previously submitted to WABA for our personal WhatsApp or WhatsApp business account?
Yes, please find the process of offboarding a phone number:
1. Send a ticket to our Support Team to request a release of WhatsApp Number from WhatsApp Business API
2. WhatsApp Team will process the request, and the processing time will be around 1 week
3. After deletion, you can reuse the number for the business and consumer (personal) app but cannot be registered as an enterprise account, which is the WhatsApp Business API again.
Also, please be advised the phone account will lose all account details/data, insight, and message history. Exceptions: There are scenarios where the business added the wrong phone number and was not in use at all( did not send any message), a request can be placed in order to revert back the phone number.
In these exceptions, we can re-use them on the WhatsApp Business API, personal, and small business app. However, this would be subject to WhatsApp policy changes.