https://www.macrumors.com/2023/05/25/whatsapp-usernames-in-development/
WhatsApp Usernames May Let You Keep Your Phone Number Private - MacRumors
WhatsApp appears to have a username feature in the works that could potentially provide people on the messaging service with an additional layer of privacy. As...
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https://signal.org/blog/phone-number-privacy-usernames/
Signal Blog Keep your phone number private with Signal usernames
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