With this new feature, you can now use WhatsApp on your phone and up to four other non-phone devices simultaneously, even if the cell phone battery runs out. Each additional device will connect to the app independently.
They confirmed it from Facebook Develop new technologies to maintain end-to-end encryption Meanwhile, achieving data synchronization such as: contact names, chat files, starred messages and more on all devices. To achieve this, the architecture of WhatsApp has been rethought and new systems are designed to enable an independent multi-device experience while maintaining end-to-end privacy and encryption.
The current WhatsApp experience for complementary devices on the Web, macOS, Windows and Portal uses the smartphone app as the main device, making the cell phone the source for all user data and the only device capable of encrypting or decrypting messages, initiating calls, etc. Additional devices maintain a secure and continuous connection to the phone and simply reflect their content in their user interface.
This architecture makes it easy to deliver a simultaneous experience between the phone and the companion device without compromising security.. However, it does come with some important reliable trade-offs: by requiring the phone to perform all operations, additional devices are slower and frequently disconnect, especially when the phone’s connection is poor, the battery runs out, or the process’s application has been terminated by the phone’s operating system . It also allows only one additional device to run at a time, which means people can’t connect to Portal while checking their messages on their PC, for example.
How to test the beta version of WhatsApp on a multi-device device
starting The multi-device WhatsApp experience can be tested by the user group within the current beta program البرنامج. At the same time, some additional features will be added to it before it is slowly rolled out on a larger scale.
To learn more about the beta and registration, the user should visit the WhatsApp Help Center.