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Usernames
The @username identifier WhatsApp lets you attach to an account, as an alternative to sharing your phone number.
WhatsApp usernames are rolling out in phases as a way to reach someone without knowing their number. This is the hub of the site: it ties together everything involved in creating, sharing, protecting, and validating a username — links, QR codes, the Username Key, availability, privacy, security, the API, and the business use case (BSUID).
Frequently asked questions
Are WhatsApp usernames available to everyone yet?
Rollout is happening in phases by region and app version, so availability varies — check the availability page for what to expect while you wait.
Do I need a username if I already share my phone number?
No, it's optional. A username just lets you be reached without exposing your number, which matters for privacy and for business accounts.