WhatsApp usernames explained: How they'll work — and why phone numbers aren't going away

WhatsApp's upcoming username feature has sparked debate over privacy, security and impersonation. One of the biggest points of confusion is whether usernames will replace phone numbers altogether.

The short answer is no.

The feature changes what other users can see, not how WhatsApp identifies an account. Users will still need a mobile number to create and maintain a WhatsApp account, but they will no longer have to share that number with everyone they interact with.

Here's how the feature is expected to work.

Phone numbers will remain mandatory

One of the biggest misconceptions about WhatsApp usernames is that they will allow people to create accounts anonymously without a phone number.

That is not the case.

According to technology experts, every WhatsApp account will continue to be registered using a mobile number. The phone number remains linked to the account on WhatsApp's backend, even if other users only see a username.

In other words, usernames are designed to hide phone numbers from public view rather than replace them altogether.

Why introduce usernames?

The primary goal is to improve privacy.

Today, anyone who messages you on WhatsApp or joins the same group can often see your phone number. For many people, that number is linked to banking services, digital payments, government platforms and one-time passwords, making it an increasingly valuable piece of personal information.

Tech lawyer Mishi Choudhary says reducing the need to share phone numbers is itself a privacy and security benefit because it lowers exposure to SIM swap attacks, phishing attempts and account takeovers.

The feature could also help users who participate in large WhatsApp groups, where phone numbers are routinely visible to people they may not know.

How will people find you?

Instead of searching for a phone number, users will be able to connect using a username.

However, WhatsApp is not turning usernames into public profiles.

The company says there will be:

• No public username directory


• No username suggestions


• No recommendation system for discovering users

This means usernames are intended to serve as another way to connect with people you already know, rather than as a public identity that anyone can browse or search.

Can someone simply guess a username?

WhatsApp says it is introducing several safeguards to reduce unwanted contact.

Besides requiring users to know another person's username, the platform plans to block repeated attempts to guess usernames and limit how many new people an account can contact within a given period.

According to technology experts, WhatsApp is also adding a PIN-like mechanism that provides an additional layer of verification before someone can initiate contact through a username.

Together, these measures are intended to make unsolicited messages more difficult than simply knowing or guessing a username.

What about businesses and public figures?

One concern surrounding usernames is whether scammers could impersonate banks, businesses, celebrities or government agencies.

WhatsApp says it has reserved usernames for public figures and government entities so they can only be claimed by their legitimate owners. The platform also already operates verified business accounts, helping users distinguish authentic businesses from imposters.

Experts note, however, that impersonation is not unique to usernames. Fraudsters have long relied on fake profile photos, similar display names and unofficial phone numbers to pose as customer support representatives or company executives.

Does this affect traceability?

Another common question is whether usernames make WhatsApp users harder to identify.

Experts say there is an important distinction between public visibility and platform traceability.

Although a username hides a person's phone number from other users, WhatsApp still requires that number when the account is created and maintains the association internally.

In other words, usernames change how users identify one another, not how WhatsApp identifies accounts on its own systems.

How does this compare with other messaging apps?

WhatsApp is not the first messaging platform to introduce usernames.

Apps such as Signal and Telegram already allow users to connect without necessarily sharing their phone numbers publicly.

However, privacy protections vary across platforms depending on how usernames are implemented, how easily users can be discovered and what safeguards exist against spam, impersonation and abuse.

What safeguards has WhatsApp announced?

The company says the feature is still under development and will be rolled out gradually later this year.

Among the safeguards announced so far are:

• Reserved usernames for public figures and government entities


• Limits on how many new people an account can contact


• Systems to detect and remove impersonation and abusive accounts


• Protections against repeated attempts to guess usernames


• No public username directory or discovery system

WhatsApp has also said it will refine the feature based on user feedback as the rollout progresses.

For most users, the practical change is straightforward: usernames will provide another way to connect on WhatsApp without revealing a personal phone number. The feature changes what other people can see—not how WhatsApp authenticates or maintains an account, which will continue to require a registered mobile number.