This new functionality will completely transform the user experience by turning X into a "global address book", all without the need to share your phone number. 
X owner Elon Musk has confirmed this long-awaited announcement, reinforcing his vision of taking online communication to the next level. Recall that Musk had already advanced his plans for what was then called Twitter 2.0 last November.
Calls and video calls will be available to everyone on iOS, Android devices, Mac and Windows computers. The most interesting thing is that this revolutionary feature guarantees the privacy of users by implementing a strong encryption system. This means that you will be able to communicate without worries about the security of your conversations, a similar approach to the successful Signal app system, although in this case, it will not be necessary to share your phone number to start using it.
X's goal is clear: to become the "effective global address book." With this innovation, Musk and his team are taking online communication to a new level and creating a space where privacy and connectivity go hand in hand. We're excited to see how X will change the way we communicate in the digital age. Stay tuned for more details on this exciting evolution of the social network!