WhatsApp is finalizing a feature that will allow choose and reserve a unique username, similar to what already exists on other platforms. The idea is that you can be contacted without giving your phone number and, in addition, secure your favorite alias before global deployment.
According to the clues seen by WABetaInfo in the beta for Android 2.25.28.12, the reservation system is being tested to ensure a smooth start. Although the feature isn't live for everyone yet, WhatsApp is preparing a pre-reservation phase so that no one is left without their name because they arrive late.
What is username protection and why does it matter?
The username will be an identifier only preceded by @ which will allow you to chat without sharing your personal number. This adds a extra layer of privacy, very useful both in everyday life and in professional or public contexts.
In addition to being unique, this alias can be shared via link or directly as a nickname, so that others find you more easily without exposing sensitive data. For many users, it's a more convenient way to control who they talk to and how.
WhatsApp is also working on a “username key”, a filter that will be required to start the first chat even if someone knows your nickname. This way, the spam and unwanted contacts that could arise if you only had to write your @.
This new feature does not change the traditional use: the phone number will continue to work as always and the alias will not be mandatoryAnyone who wants to can continue using the app as before.

How it will work and where it will appear in the app
References in the beta place the option within the user profile, in Settings, in a section called “User”, with specific access for reserve the nameThe function will coexist with regular data such as numbers and other links.
The reservation will be a separate process from the full deployment, designed so that you can guarantee your identifier before the feature is available to everyone. After that, the company will activate progressively the functions associated with the alias.
Basic rules have been observed in the code: for example, Names beginning with “www” will not be allowed. to avoid confusion with official sites. Obviously, there cannot be two identical aliases and each name will be unique.
Although there are no final screenshots yet, the suggested layout is clear: an area to enter the alias, a notice about its availability and uniqueness, and a button to confirm the reservation if the name is free.

Planned schedule and deployment
The function is in active development and has no confirmed release date. WhatsApp is conducting technical tests to ensure that, when it arrives, performance is stable and there are no major incidents.
The strategy involves prioritizing a phase of early booking for a large group and then activate the rest of the alias capabilities in a gradual and controlledThis is the company's usual way of detecting bugs and fine-tuning details before general release.
The fact that the reservation system is appearing in beta is a sign that the project is moving forward, but for now, it is not advisable to expect immediate accessThe reasonable thing is that the distribution is done in waves, as is the case with other functions.

Tips for choosing and securing your alias
Think of a nickname that is easy to remember and writeIf your name is in high demand, prepare alternatives (with initials or a number) so you don't get stuck if your first choice is already taken.
Avoid terms that may confuse or impersonate identities (for example, those that appear to be official services). In addition, misleading formats, such as aliases that simulate web addresses, are not permitted.
If you are going to use WhatsApp in public or work environments, try to make your alias consistent with your professional identity. At the same time, remember that thanks to the validation key you will have a additional control about who can start the conversation.
When the reservation is available, act quickly and avoid sharing your password except with the person you really want to talk to. Keeping that filter under control will greatly reduce noise and unwanted contact.
quick questions
Will it work for chatting without sharing your phone number? Yes, the alias will allow people to contact you without revealing your number, adding more privacy on your bill.
Can there be two identical aliases? No. Each username will be only, which is why advance booking is enabled.
Can I change my nickname after I reserve it? There are no official details yet; WhatsApp will have to confirm that point when you activate the function.
What is the “username key”? It is an additional validation step to decide who can start the first chat with you even if he knows your alias.
If everything goes as planned, you will soon be able to get away from the phone number to be contactable by your alias, with a reservation system that aims to distribute opportunities and a control key to curb spam. The exact date remains to be determined, but beta progress indicates a gradual rollout with a focus on privacy.