For over a decade, WhatsApp has run on one simple rule: your phone number is your identity. Want to message someone new? You need their number. Want a stranger to message you? They need yours. That’s about to change.
WhatsApp has officially begun rolling out usernames, a feature that lets people connect and chat using a unique @handle instead of a phone number. Reservations opened globally in late June 2026, with the first countries going live on July 7, followed by a second wave on July 20, and the rest of the world catching up through September 2026.
It’s one of the biggest shifts in how WhatsApp works since it launched, and whether you’re a personal user or a business relying on WhatsApp to reach customers, it’s worth understanding before it lands in your app.
What exactly is a WhatsApp username?
A username is an optional identity layer that sits on top of your existing account. Instead of handing someone your phone number the moment you meet them, you can share a handle like @yourname. Anyone who has that exact handle can find you and start a chat, while your phone number stays completely hidden from them.
A few important details:
- Usernames must be between 3 and 35 characters, made up of lowercase letters, numbers, periods, and underscores.
- They can’t start with “www.” or end in a domain like “.com,” to avoid impersonating websites.
- Your number is still required to create and log into your account. It just won’t be the thing you’re handing out anymore.
- WhatsApp is not building a searchable directory. There’s no browsing or typeahead suggestions the way there is on Instagram. People need your exact handle to reach you — nothing more, nothing less.
- You can also set a username key, an extra layer of security that unknown contacts must enter before they’re able to message you for the first time. You can change it whenever you like.
If you or your business already has a recognizable Instagram or Facebook handle, WhatsApp is letting you claim the same one here too, so your identity stays consistent across every platform you’re active on.
Why this matters for privacy
Think about how many people currently have your number simply because you needed to message them once — a delivery driver, a form you filled out, someone from a networking event. Usernames give people a way to connect without permanently exposing a piece of personal information that’s tied to banking apps, two-factor authentication, and more.
Why this matters for businesses
This is where things get more interesting from a marketing standpoint. Right now, businesses and API users are getting early access to reserve usernames that match their existing Display Name, Meta Verified Name, or Instagram/Facebook handle. That’s a meaningful opportunity — and a genuine risk if you sit on it.
If your competitor claims a clean, recognizable handle before you do, customers may end up messaging the wrong business entirely. For agencies managing multiple client accounts, this is the kind of detail that needs to be handled proactively rather than reactively. The claim window is open now, well ahead of the September global rollout, and popular names are already going fast.
There are also some early concerns worth watching. Analysts and privacy advocates have flagged the risk of impersonation, since anyone can create lookalike handles (think @brandname, @brand.name, @brandnameofficial) without WhatsApp’s directory to help users tell them apart. WhatsApp says it’s addressing this with detail cards that flag new or unfamiliar accounts, along with block and report options — but brand owners should still expect to actively protect their identity, not assume the platform will do it for them.
Our take
Usernames are a genuine step forward for privacy, and a genuine “act now” moment for any business active on WhatsApp. If your brand has a name worth protecting, the smartest move is to reserve your handle today rather than wait for the rollout to reach your market.
At Catbook, we’re already helping clients secure and set up their WhatsApp usernames as part of their broader social presence, so their identity stays consistent and protected across every channel. If you’d like a hand claiming yours, get in touch.